diff --git a/.github/ISSUE_TEMPLATE/issue.md b/.github/ISSUE_TEMPLATE/issue.md
index 93ba91cf..649d22ff 100644
--- a/.github/ISSUE_TEMPLATE/issue.md
+++ b/.github/ISSUE_TEMPLATE/issue.md
@@ -7,7 +7,7 @@ assignees: ''
 
 ---
 
-- [ ] 请确保已经看过 wiki：https://github.com/alibaba/RedisShake/wiki
+- [ ] 请确保已经看过 wiki：https://RedisShake/wiki
 - [ ] 请确保已经学习过 Markdown 语法，良好的排版有助于维护人员了解你的问题
 - [ ] 请在此提供足够的信息供社区维护人员排查问题
 - [ ] 请在提交 issue 前删除此模板中多余的文字，包括这几句话
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1aa44ff4..4ba9c3e0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,13 +1,13 @@
 name: CI
 
-on: [ pull_request ]
+on: [ push, pull_request ]
 
 jobs:
     black-box-test:
         runs-on: ubuntu-latest
         strategy:
             matrix:
-                redis-version: [ 5, 6, 7 ]
+                redis-version: [ "2.8", "3.0", "4.0", "5.0", "6.0", "7.0" ]
         steps:
             -   name: Git checkout
                 uses: actions/checkout@v2
@@ -22,7 +22,7 @@ jobs:
                     sudo apt-get install git
                     git clone https://github.com/redis/redis
                     cd redis
-                    git checkout ${{ matrix.redis-version }}.0
+                    git checkout ${{ matrix.redis-version }}
                     make -j
                     mkdir bin
                     cp src/redis-server bin/redis-server
@@ -31,7 +31,7 @@ jobs:
             -   name: Setup Python
                 uses: actions/setup-python@v4
                 with:
-                    python-version: '3.10'
+                    python-version: '3.11'
 
             -   name: make redis-shake
                 run: |
@@ -39,6 +39,5 @@ jobs:
 
             -   name: test
                 run: |
-                    cd test
-                    pip3 install -r requirements.txt
-                    python3 main.py
\ No newline at end of file
+                    pip3 install -r tests/requirements.txt
+                    sh test.sh
\ No newline at end of file
diff --git a/.github/workflows/pages.yml b/.github/workflows/pages.yml
new file mode 100644
index 00000000..9cfcdaaf
--- /dev/null
+++ b/.github/workflows/pages.yml
@@ -0,0 +1,33 @@
+name: Pages
+on:
+    workflow_dispatch: { }
+    push:
+        branches:
+            - main
+jobs:
+    deploy:
+        runs-on: ubuntu-latest
+        permissions:
+            pages: write
+            id-token: write
+        environment:
+            name: github-pages
+            url: ${{ steps.deployment.outputs.page_url }}
+        steps:
+            -   uses: actions/checkout@v3
+                with:
+                    fetch-depth: 0
+            -   uses: actions/setup-node@v3
+                with:
+                    node-version: 16
+                    cache: npm
+            -   run: npm ci
+            -   name: Build
+                run: npm run docs:build
+            -   uses: actions/configure-pages@v2
+            -   uses: actions/upload-pages-artifact@v1
+                with:
+                    path: docs/.vitepress/dist
+            -   name: Deploy
+                id: deployment
+                uses: actions/deploy-pages@v1
\ No newline at end of file
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index e8f933fd..a0a37ed5 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -66,3 +66,23 @@ jobs:
                     asset_content_type: application/gzip
                 env:
                     GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+            -   name: "Upload release windows-amd64"
+                uses: actions/upload-release-asset@v1
+                with:
+                    upload_url: ${{ steps.release.outputs.upload_url }}
+                    asset_path: ./bin/redis-shake-windows-amd64.tar.gz
+                    asset_name: redis-shake-windows-amd64.tar.gz
+                    asset_content_type: application/gzip
+                env:
+                    GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+            -   name: "Upload release windows-arm64"
+                uses: actions/upload-release-asset@v1
+                with:
+                    upload_url: ${{ steps.release.outputs.upload_url }}
+                    asset_path: ./bin/redis-shake-windows-arm64.tar.gz
+                    asset_name: redis-shake-windows-arm64.tar.gz
+                    asset_content_type: application/gzip
+                env:
+                    GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index 61d3c65e..b83fe407 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,8 +1,12 @@
-.idea
-data
-__pycache__
-bin
-.DS_Store
+# system
+.idea/
+__pycache__/
+.DS_Store/
+
+# compiled output or test output
+bin/
+dist/
+tmp/
 *.log
 *.rdb
 *.aof
diff --git a/README.md b/README.md
index ee713ad4..23fa1048 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,8 @@
 # redis-shake
 
-[![CI](https://github.com/alibaba/RedisShake/actions/workflows/ci.yml/badge.svg?branch=v3)](https://github.com/alibaba/RedisShake/actions/workflows/ci.yml)
+[![CI](https://RedisShake/actions/workflows/ci.yml/badge.svg?branch=v3)](https://RedisShake/actions/workflows/ci.yml)
 
-- [中文文档](https://github.com/alibaba/RedisShake/wiki)
+- [中文文档](https://RedisShake/wiki)
 
 redis-shake is a tool for Redis data migration and data filtering.
 
@@ -16,7 +16,7 @@ redis-shake is a tool for Redis data migration and data filtering.
 * ☁️ Support Aliyun Redis and ElastiCache
 
 For older versions of redis-shake (support codis, twemproxy) please
-visit [here](https://github.com/alibaba/RedisShake/tree/develop).
+visit [here](https://RedisShake/tree/develop).
 
 ![redis-shake2.PNG](https://s2.loli.net/2022/07/10/OZrSGutknlI8XNp.png)
 
@@ -28,14 +28,14 @@ visit [here](https://github.com/alibaba/RedisShake/tree/develop).
 
 ### Binary package
 
-Download from Release: [https://github.com/alibaba/RedisShake/releases](https://github.com/alibaba/RedisShake/releases)
+Download from Release: [https://RedisShake/releases](https://RedisShake/releases)
 
 ### Compile from source
 
 After downloading the source code, run the `sh build.sh` command to compile.
 
 ```shell
-git clone https://github.com/alibaba/RedisShake
+git clone https://RedisShake
 cd RedisShake
 sh build.sh
 ```
diff --git a/build.sh b/build.sh
index c4e1378e..d4132c12 100755
--- a/build.sh
+++ b/build.sh
@@ -7,11 +7,7 @@ BIN_DIR=$(pwd)/bin/
 rm -rf "$BIN_DIR"
 mkdir -p "$BIN_DIR"
 
-cp sync.toml "$BIN_DIR"
-cp scan.toml "$BIN_DIR"
-cp restore.toml "$BIN_DIR"
-cp -r filters "$BIN_DIR"
-cp -r scripts/cluster_helper "$BIN_DIR"
+cp -r configs/* "$BIN_DIR"
 
 dist() {
     echo "try build GOOS=$1 GOARCH=$2"
@@ -30,7 +26,7 @@ dist() {
 
 if [ "$1" == "dist" ]; then
     echo "[ DIST ]"
-    for g in "linux" "darwin"; do
+    for g in "linux" "darwin" "windows"; do
         for a in "amd64" "arm64"; do
             dist "$g" "$a"
         done
diff --git a/cmd/redis-shake/main.go b/cmd/redis-shake/main.go
index 1f16b5a1..b39d1c1c 100644
--- a/cmd/redis-shake/main.go
+++ b/cmd/redis-shake/main.go
@@ -1,120 +1,124 @@
 package main
 
 import (
-	"fmt"
-	"github.com/alibaba/RedisShake/internal/commands"
-	"github.com/alibaba/RedisShake/internal/config"
-	"github.com/alibaba/RedisShake/internal/filter"
-	"github.com/alibaba/RedisShake/internal/log"
-	"github.com/alibaba/RedisShake/internal/reader"
-	"github.com/alibaba/RedisShake/internal/statistics"
-	"github.com/alibaba/RedisShake/internal/writer"
-	"net/http"
+	"RedisShake/internal/commands"
+	"RedisShake/internal/config"
+	"RedisShake/internal/log"
+	"RedisShake/internal/reader"
+	"RedisShake/internal/status"
+	"RedisShake/internal/transform"
+	"RedisShake/internal/utils"
+	"RedisShake/internal/writer"
+	"github.com/mcuadros/go-defaults"
 	_ "net/http/pprof"
-	"os"
-	"runtime"
 )
 
 func main() {
-	if len(os.Args) < 2 || len(os.Args) > 3 {
-		fmt.Println("Usage: redis-shake <config file> <filter file>")
-		fmt.Println("Example: redis-shake config.toml filter.lua")
-		os.Exit(1)
-	}
-
-	// load filter file
-	if len(os.Args) == 3 {
-		luaFile := os.Args[2]
-		filter.LoadFromFile(luaFile)
-	}
-
-	// load config
-	configFile := os.Args[1]
-	config.LoadFromFile(configFile)
+	v := config.LoadConfig()
 
-	log.Init()
-	log.Infof("GOOS: %s, GOARCH: %s", runtime.GOOS, runtime.GOARCH)
-	log.Infof("Ncpu: %d, GOMAXPROCS: %d", config.Config.Advanced.Ncpu, runtime.GOMAXPROCS(0))
-	log.Infof("pid: %d", os.Getpid())
-	log.Infof("pprof_port: %d", config.Config.Advanced.PprofPort)
-	if len(os.Args) == 2 {
-		log.Infof("No lua file specified, will not filter any cmd.")
-	}
-
-	// start pprof
-	if config.Config.Advanced.PprofPort != 0 {
-		go func() {
-			err := http.ListenAndServe(fmt.Sprintf("localhost:%d", config.Config.Advanced.PprofPort), nil)
-			if err != nil {
-				log.PanicError(err)
-			}
-		}()
-	}
+	log.Init(config.Opt.Advanced.LogLevel, config.Opt.Advanced.LogFile)
+	utils.ChdirAndAcquireFileLock()
+	utils.SetNcpu()
+	utils.SetPprofPort()
+	transform.Init()
 
-	// start statistics
-	if config.Config.Advanced.MetricsPort != 0 {
-		statistics.Metrics.Address = config.Config.Source.Address
-		go func() {
-			log.Infof("metrics url: http://localhost:%d", config.Config.Advanced.MetricsPort)
-			mux := http.NewServeMux()
-			mux.HandleFunc("/", statistics.Handler)
-			err := http.ListenAndServe(fmt.Sprintf("localhost:%d", config.Config.Advanced.MetricsPort), mux)
-			if err != nil {
-				log.PanicError(err)
-			}
-		}()
+	// create reader
+	var theReader reader.Reader
+	if v.IsSet("SyncStandaloneReader") {
+		opts := new(reader.SyncStandaloneReaderOptions)
+		defaults.SetDefaults(opts)
+		err := v.UnmarshalKey("SyncStandaloneReader", opts)
+		if err != nil {
+			log.Panicf("failed to read the SyncReader config entry. err: %v", err)
+		}
+		theReader = reader.NewSyncStandaloneReader(opts)
+		log.Infof("create SyncStandaloneReader: %v", opts.Address)
+	} else if v.IsSet("SyncClusterReader") {
+		opts := new(reader.SyncClusterReaderOptions)
+		defaults.SetDefaults(opts)
+		err := v.UnmarshalKey("SyncClusterReader", opts)
+		if err != nil {
+			log.Panicf("failed to read the SyncReader config entry. err: %v", err)
+		}
+		theReader = reader.NewSyncClusterReader(opts)
+		log.Infof("create SyncClusterReader: %v", opts.Address)
+	} else if v.IsSet("ScanStandaloneReader") {
+		opts := new(reader.ScanStandaloneReaderOptions)
+		defaults.SetDefaults(opts)
+		err := v.UnmarshalKey("ScanStandaloneReader", opts)
+		if err != nil {
+			log.Panicf("failed to read the ScanReader config entry. err: %v", err)
+		}
+		theReader = reader.NewScanStandaloneReader(opts)
+		log.Infof("create ScanStandaloneReader: %v", opts.Address)
+	} else if v.IsSet("ScanClusterReader") {
+		opts := new(reader.ScanClusterReaderOptions)
+		defaults.SetDefaults(opts)
+		err := v.UnmarshalKey("ScanClusterReader", opts)
+		if err != nil {
+			log.Panicf("failed to read the ScanReader config entry. err: %v", err)
+		}
+		theReader = reader.NewScanClusterReader(opts)
+		log.Infof("create ScanClusterReader: %v", opts.Address)
+	} else if v.IsSet("RdbReader") {
+		opts := new(reader.RdbReaderOptions)
+		defaults.SetDefaults(opts)
+		err := v.UnmarshalKey("RdbReader", opts)
+		if err != nil {
+			log.Panicf("failed to read the RdbReader config entry. err: %v", err)
+		}
+		theReader = reader.NewRDBReader(opts)
+		log.Infof("create RdbReader: %v", opts.Filepath)
+	} else {
+		log.Panicf("no reader config entry found")
 	}
 
 	// create writer
 	var theWriter writer.Writer
-	target := &config.Config.Target
-	switch config.Config.Target.Type {
-	case "standalone":
-		theWriter = writer.NewRedisWriter(target.Address, target.Username, target.Password, target.IsTLS)
-	case "cluster":
-		theWriter = writer.NewRedisClusterWriter(target.Address, target.Username, target.Password, target.IsTLS)
-	default:
-		log.Panicf("unknown target type: %s", target.Type)
-	}
-
-	// create reader
-	source := &config.Config.Source
-	var theReader reader.Reader
-	if config.Config.Type == "sync" {
-		theReader = reader.NewPSyncReader(source.Address, source.Username, source.Password, source.IsTLS, source.ElastiCachePSync)
-	} else if config.Config.Type == "restore" {
-		theReader = reader.NewRDBReader(source.RDBFilePath)
-	} else if config.Config.Type == "scan" {
-		theReader = reader.NewScanReader(source.Address, source.Username, source.Password, source.IsTLS)
+	if v.IsSet("RedisStandaloneWriter") {
+		opts := new(writer.RedisStandaloneWriterOptions)
+		defaults.SetDefaults(opts)
+		err := v.UnmarshalKey("RedisStandaloneWriter", opts)
+		if err != nil {
+			log.Panicf("failed to read the RedisStandaloneWriter config entry. err: %v", err)
+		}
+		theWriter = writer.NewRedisStandaloneWriter(opts)
+		log.Infof("create RedisStandaloneWriter: %v", opts.Address)
+	} else if v.IsSet("RedisClusterWriter") {
+		opts := new(writer.RedisClusterWriterOptions)
+		defaults.SetDefaults(opts)
+		err := v.UnmarshalKey("RedisClusterWriter", opts)
+		if err != nil {
+			log.Panicf("failed to read the RedisClusterWriter config entry. err: %v", err)
+		}
+		theWriter = writer.NewRedisClusterWriter(opts)
+		log.Infof("create RedisClusterWriter: %v", opts.Address)
 	} else {
-		log.Panicf("unknown source type: %s", config.Config.Type)
+		log.Panicf("no writer config entry found")
 	}
-	ch := theReader.StartRead()
 
-	// start sync
-	statistics.Init()
-	id := uint64(0)
+	// create status
+	status.Init(theReader, theWriter)
+
+	ch := theReader.StartRead()
 	for e := range ch {
-		statistics.UpdateInQueueEntriesCount(uint64(len(ch)))
 		// calc arguments
-		e.Id = id
-		id++
 		e.CmdName, e.Group, e.Keys = commands.CalcKeys(e.Argv)
 		e.Slots = commands.CalcSlots(e.Keys)
 
 		// filter
-		code := filter.Filter(e)
-		statistics.UpdateEntryId(e.Id)
-		if code == filter.Allow {
+		code := transform.Transform(e)
+		if code == transform.Allow {
 			theWriter.Write(e)
-			statistics.AddAllowEntriesCount()
-		} else if code == filter.Disallow {
-			// do something
-			statistics.AddDisallowEntriesCount()
+			status.AddEntryCount(e.CmdName, true)
+		} else if code == transform.Disallow {
+			status.AddEntryCount(e.CmdName, false)
 		} else {
-			log.Panicf("error when run lua filter. entry: %s", e.ToString())
+			log.Panicf("error when run lua filter. entry: %s", e.String())
 		}
 	}
-	theWriter.Close()
-	log.Infof("finished.")
+
+	theWriter.Close()       // Wait for all writing operations to complete
+	utils.ReleaseFileLock() // Release file lock
+	log.Infof("all done")
 }
diff --git a/sync.toml b/configs/all.toml
similarity index 60%
rename from sync.toml
rename to configs/all.toml
index 71629e40..d94224c0 100644
--- a/sync.toml
+++ b/configs/all.toml
@@ -1,37 +1,46 @@
-type = "sync"
+#transform = ""
 
-[source]
-version = 5.0 # redis version, such as 2.8, 4.0, 5.0, 6.0, 6.2, 7.0, ...
+#[RdbReader]
+#filepath = "/data/dump.rdb"
+
+
+#[SyncStandaloneReader]
+#address = "127.0.0.1:6379"
+#username = "" # keep empty if not using ACL
+#password = "" # keep empty if no authentication is required
+#tls = false
+
+
+[SyncClusterReader]
 address = "127.0.0.1:6379"
 username = "" # keep empty if not using ACL
 password = "" # keep empty if no authentication is required
 tls = false
-elasticache_psync = "" # using when source is ElastiCache. ref: https://github.com/alibaba/RedisShake/issues/373
 
-[target]
-type = "standalone" # "standalone" or "cluster"
-version = 5.0 # redis version, such as 2.8, 4.0, 5.0, 6.0, 6.2, 7.0, ...
-# When the target is a cluster, write the address of one of the nodes.
-# redis-shake will obtain other nodes through the `cluster nodes` command.
+
+[RedisStandaloneWriter]
 address = "127.0.0.1:6380"
 username = "" # keep empty if not using ACL
 password = "" # keep empty if no authentication is required
 tls = false
 
-[advanced]
-dir = "data"
 
-# runtime.GOMAXPROCS, 0 means use runtime.NumCPU() cpu cores
-ncpu = 4
+#[RedisClusterWriter]
+#address = "127.0.0.1:6380"
+#username = "" # keep empty if not using ACL
+#password = "" # keep empty if no authentication is required
+#tls = false
 
-# pprof port, 0 means disable
-pprof_port = 0
 
-# metric port, 0 means disable
-metrics_port = 0
+[advanced]
+dir = "data"
+ncpu = 3 # runtime.GOMAXPROCS, 0 means use runtime.NumCPU() cpu cores
+
+pprof_port = 0 # pprof port, 0 means disable
+status_port = 0 # status port, 0 means disable
 
 # log
-log_file = "redis-shake.log"
+log_file = "shake.log"
 log_level = "info" # debug, info or warn
 log_interval = 5 # in seconds
 
@@ -44,7 +53,8 @@ log_interval = 5 # in seconds
 # ignore:  redis-shake will skip restore the key when meet "Target key name is busy" error.
 rdb_restore_command_behavior = "rewrite" # panic, rewrite or skip
 
-# pipeline
+# redis-shake uses pipeline to improve sending performance.
+# This item limits the maximum number of commands in a pipeline.
 pipeline_count_limit = 1024
 
 # Client query buffers accumulate new commands. They are limited to a fixed
@@ -53,4 +63,7 @@ target_redis_client_max_querybuf_len = 1024_000_000
 
 # In the Redis protocol, bulk requests, that are, elements representing single
 # strings, are normally limited to 512 mb.
-target_redis_proto_max_bulk_len = 512_000_000
\ No newline at end of file
+target_redis_proto_max_bulk_len = 512_000_000
+
+# If the source is Elasticache or MemoryDB, you can set this item.
+aws_psync = ""
\ No newline at end of file
diff --git a/filters/aliyun.lua b/configs/transform/aliyun.lua
similarity index 66%
rename from filters/aliyun.lua
rename to configs/transform/aliyun.lua
index 8ab684b6..2cab44ce 100644
--- a/filters/aliyun.lua
+++ b/configs/transform/aliyun.lua
@@ -1,5 +1,5 @@
 -- Aliyun Redis 4.0: skip OPINFO command
-function filter(id, is_base, group, cmd_name, keys, slots, db_id, timestamp_ms)
+function transform(id, is_base, group, cmd_name, keys, slots, db_id, timestamp_ms)
     if cmd_name == "OPINFO" then
         return 1, db_id -- disallow
     else
diff --git a/filters/aws.lua b/configs/transform/aws.lua
similarity index 66%
rename from filters/aws.lua
rename to configs/transform/aws.lua
index 23101c39..afeee287 100644
--- a/filters/aws.lua
+++ b/configs/transform/aws.lua
@@ -1,5 +1,5 @@
 -- ElastiCache: skip REPLCONF command
-function filter(id, is_base, group, cmd_name, keys, slots, db_id, timestamp_ms)
+function transform(id, is_base, group, cmd_name, keys, slots, db_id, timestamp_ms)
     if cmd_name == "REPLCONF" then
         return 1, db_id -- disallow
     else
diff --git a/filters/key_prefix.lua b/configs/transform/key_prefix.lua
similarity index 100%
rename from filters/key_prefix.lua
rename to configs/transform/key_prefix.lua
diff --git a/filters/print.lua b/configs/transform/print.lua
similarity index 100%
rename from filters/print.lua
rename to configs/transform/print.lua
diff --git a/filters/skip_scripts.lua b/configs/transform/skip_scripts.lua
similarity index 100%
rename from filters/skip_scripts.lua
rename to configs/transform/skip_scripts.lua
diff --git a/filters/swap_db.lua b/configs/transform/swap_db.lua
similarity index 100%
rename from filters/swap_db.lua
rename to configs/transform/swap_db.lua
diff --git a/docs/.gitignore b/docs/.gitignore
new file mode 100644
index 00000000..ff359c63
--- /dev/null
+++ b/docs/.gitignore
@@ -0,0 +1,2 @@
+node_modules/
+cache/
\ No newline at end of file
diff --git a/docs/.vitepress/config.ts b/docs/.vitepress/config.ts
new file mode 100644
index 00000000..9b1bba3d
--- /dev/null
+++ b/docs/.vitepress/config.ts
@@ -0,0 +1,29 @@
+import { defineConfig } from 'vitepress'
+
+// https://vitepress.dev/reference/site-config
+export default defineConfig({
+  title: "RedisShake",
+  description: "RedisShake is a tool for processing and migrating Redis data.",
+
+  themeConfig: {
+    // https://vitepress.dev/reference/default-theme-config
+    nav: [
+      { text: 'Home', link: '/' },
+      { text: 'Examples', link: '/markdown-examples' }
+    ],
+
+    sidebar: [
+      {
+        text: 'Examples',
+        items: [
+          { text: 'Markdown Examples', link: '/markdown-examples' },
+          { text: 'Runtime API Examples', link: '/api-examples' }
+        ]
+      }
+    ],
+
+    socialLinks: [
+      { icon: 'github', link: 'https://github.com/tair-opensource/RedisShake' }
+    ]
+  }
+})
diff --git a/docs/api-examples.md b/docs/api-examples.md
new file mode 100644
index 00000000..6bd8bb5c
--- /dev/null
+++ b/docs/api-examples.md
@@ -0,0 +1,49 @@
+---
+outline: deep
+---
+
+# Runtime API Examples
+
+This page demonstrates usage of some of the runtime APIs provided by VitePress.
+
+The main `useData()` API can be used to access site, theme, and page data for the current page. It works in both `.md` and `.vue` files:
+
+```md
+<script setup>
+import { useData } from 'vitepress'
+
+const { theme, page, frontmatter } = useData()
+</script>
+
+## Results
+
+### Theme Data
+<pre>{{ theme }}</pre>
+
+### Page Data
+<pre>{{ page }}</pre>
+
+### Page Frontmatter
+<pre>{{ frontmatter }}</pre>
+```
+
+<script setup>
+import { useData } from 'vitepress'
+
+const { site, theme, page, frontmatter } = useData()
+</script>
+
+## Results
+
+### Theme Data
+<pre>{{ theme }}</pre>
+
+### Page Data
+<pre>{{ page }}</pre>
+
+### Page Frontmatter
+<pre>{{ frontmatter }}</pre>
+
+## More
+
+Check out the documentation for the [full list of runtime APIs](https://vitepress.dev/reference/runtime-api#usedata).
diff --git a/docs/index.md b/docs/index.md
new file mode 100644
index 00000000..9f731cf8
--- /dev/null
+++ b/docs/index.md
@@ -0,0 +1,25 @@
+---
+# https://vitepress.dev/reference/default-theme-home-page
+layout: home
+
+hero:
+    name: "RedisShake"
+    text: "Data Transform And Data Migration For Redis-like Database"
+    tagline: RedisShake is a tool for transform and migrating Redis data.
+    actions:
+        -   theme: brand
+            text: Markdown Examples
+            link: /markdown-examples
+        -   theme: alt
+            text: API Examples
+            link: /api-examples
+
+features:
+    -   title: Feature A
+        details: Lorem ipsum dolor sit amet, consectetur adipiscing elit
+    -   title: Feature B
+        details: Lorem ipsum dolor sit amet, consectetur adipiscing elit
+    -   title: Feature C
+        details: Lorem ipsum dolor sit amet, consectetur adipiscing elit
+---
+
diff --git a/docs/markdown-examples.md b/docs/markdown-examples.md
new file mode 100644
index 00000000..8e55eb8a
--- /dev/null
+++ b/docs/markdown-examples.md
@@ -0,0 +1,85 @@
+# Markdown Extension Examples
+
+This page demonstrates some of the built-in markdown extensions provided by VitePress.
+
+## Syntax Highlighting
+
+VitePress provides Syntax Highlighting powered by [Shiki](https://github.com/shikijs/shiki), with additional features like line-highlighting:
+
+**Input**
+
+````
+```js{4}
+export default {
+  data () {
+    return {
+      msg: 'Highlighted!'
+    }
+  }
+}
+```
+````
+
+**Output**
+
+```js{4}
+export default {
+  data () {
+    return {
+      msg: 'Highlighted!'
+    }
+  }
+}
+```
+
+## Custom Containers
+
+**Input**
+
+```md
+::: info
+This is an info box.
+:::
+
+::: tip
+This is a tip.
+:::
+
+::: warning
+This is a warning.
+:::
+
+::: danger
+This is a dangerous warning.
+:::
+
+::: details
+This is a details block.
+:::
+```
+
+**Output**
+
+::: info
+This is an info box.
+:::
+
+::: tip
+This is a tip.
+:::
+
+::: warning
+This is a warning.
+:::
+
+::: danger
+This is a dangerous warning.
+:::
+
+::: details
+This is a details block.
+:::
+
+## More
+
+Check out the documentation for the [full list of markdown extensions](https://vitepress.dev/guide/markdown).
diff --git a/docs/package-lock.json b/docs/package-lock.json
new file mode 100644
index 00000000..03785fe5
--- /dev/null
+++ b/docs/package-lock.json
@@ -0,0 +1,1129 @@
+{
+  "name": "docs",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "devDependencies": {
+        "vitepress": "^1.0.0-alpha.75"
+      }
+    },
+    "node_modules/@algolia/autocomplete-core": {
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+      "dev": true,
+      "dependencies": {
+        "@algolia/autocomplete-shared": "1.8.2"
+      }
+    },
+    "node_modules/@algolia/autocomplete-preset-algolia": {
+      "version": "1.8.2",
+      "resolved": "https://registry.npmjs.org/@algolia/autocomplete-preset-algolia/-/autocomplete-preset-algolia-1.8.2.tgz",
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+      "dev": true,
+      "dependencies": {
+        "@algolia/autocomplete-shared": "1.8.2"
+      },
+      "peerDependencies": {
+        "@algolia/client-search": ">= 4.9.1 < 6",
+        "algoliasearch": ">= 4.9.1 < 6"
+      }
+    },
+    "node_modules/@algolia/autocomplete-shared": {
+      "version": "1.8.2",
+      "resolved": "https://registry.npmjs.org/@algolia/autocomplete-shared/-/autocomplete-shared-1.8.2.tgz",
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+      "dev": true
+    },
+    "node_modules/@algolia/cache-browser-local-storage": {
+      "version": "4.17.0",
+      "resolved": "https://registry.npmjs.org/@algolia/cache-browser-local-storage/-/cache-browser-local-storage-4.17.0.tgz",
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+      "dev": true
+    },
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+      "dependencies": {
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+    },
+    "node_modules/@algolia/client-account": {
+      "version": "4.17.0",
+      "resolved": "https://registry.npmjs.org/@algolia/client-account/-/client-account-4.17.0.tgz",
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+      "dependencies": {
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+        "@algolia/transporter": "4.17.0"
+      }
+    },
+    "node_modules/@algolia/client-analytics": {
+      "version": "4.17.0",
+      "resolved": "https://registry.npmjs.org/@algolia/client-analytics/-/client-analytics-4.17.0.tgz",
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+        "@algolia/transporter": "4.17.0"
+      }
+    },
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+    },
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+    },
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+      }
+    },
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+      },
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+      }
+    },
+    "node_modules/@docsearch/css": {
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+      }
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+      ],
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+      ],
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+      ],
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+      "optionalDependencies": {
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+        "@esbuild/android-x64": "0.17.18",
+        "@esbuild/darwin-arm64": "0.17.18",
+        "@esbuild/darwin-x64": "0.17.18",
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+        "@esbuild/linux-arm": "0.17.18",
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+        "@esbuild/linux-x64": "0.17.18",
+        "@esbuild/netbsd-x64": "0.17.18",
+        "@esbuild/openbsd-x64": "0.17.18",
+        "@esbuild/sunos-x64": "0.17.18",
+        "@esbuild/win32-arm64": "0.17.18",
+        "@esbuild/win32-ia32": "0.17.18",
+        "@esbuild/win32-x64": "0.17.18"
+      }
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+        "darwin"
+      ],
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+    },
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+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/ai"
+        }
+      ],
+      "bin": {
+        "nanoid": "bin/nanoid.cjs"
+      },
+      "engines": {
+        "node": "^10 || ^12 || ^13.7 || ^14 || >=15.0.1"
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+      "dev": true,
+      "funding": [
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/postcss/"
+        },
+        {
+          "type": "tidelift",
+          "url": "https://tidelift.com/funding/github/npm/postcss"
+        },
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/ai"
+        }
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+        "nanoid": "^3.3.6",
+        "picocolors": "^1.0.0",
+        "source-map-js": "^1.0.2"
+      },
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+      }
+    },
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+        "npm": ">=8.0.0"
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+        "less": "*",
+        "sass": "*",
+        "stylus": "*",
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+        "stylus": {
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+        "sugarss": {
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+        "@docsearch/js": "^3.3.4",
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+        "@vue/devtools-api": "^6.5.0",
+        "@vueuse/core": "^10.1.0",
+        "body-scroll-lock": "4.0.0-beta.0",
+        "mark.js": "8.11.1",
+        "minisearch": "^6.0.1",
+        "shiki": "^0.14.2",
+        "vite": "^4.3.3",
+        "vue": "^3.2.47"
+      },
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+        "vitepress": "bin/vitepress.js"
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+    },
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+    "node_modules/vue": {
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+      "resolved": "https://registry.npmjs.org/vue/-/vue-3.3.1.tgz",
+      "integrity": "sha512-3Rwy4I5idbPVSDZu6I+fFh6tdDSZbauImCTqLxE7y0LpHtiDvPeY01OI7RkFPbva1nk4hoO0sv/NzosH2h60sg==",
+      "dev": true,
+      "dependencies": {
+        "@vue/compiler-dom": "3.3.1",
+        "@vue/compiler-sfc": "3.3.1",
+        "@vue/runtime-dom": "3.3.1",
+        "@vue/server-renderer": "3.3.1",
+        "@vue/shared": "3.3.1"
+      }
+    }
+  }
+}
diff --git a/docs/package.json b/docs/package.json
new file mode 100644
index 00000000..5e63370e
--- /dev/null
+++ b/docs/package.json
@@ -0,0 +1,10 @@
+{
+  "devDependencies": {
+    "vitepress": "^1.0.0-alpha.75"
+  },
+  "scripts": {
+    "docs:dev": "vitepress dev",
+    "docs:build": "vitepress build",
+    "docs:preview": "vitepress preview"
+  }
+}
\ No newline at end of file
diff --git a/go.mod b/go.mod
index 4dc27cf2..6c649304 100644
--- a/go.mod
+++ b/go.mod
@@ -1,16 +1,36 @@
-module github.com/alibaba/RedisShake
+module RedisShake
 
-go 1.17
+go 1.20
 
 require (
-	github.com/pelletier/go-toml/v2 v2.0.0-beta.3
+	github.com/dustin/go-humanize v1.0.1
+	github.com/go-stack/stack v1.8.1
+	github.com/mcuadros/go-defaults v1.2.0
+	github.com/redis/go-redis/v9 v9.0.4
 	github.com/rs/zerolog v1.28.0
+	github.com/spf13/viper v1.15.0
+	github.com/theckman/go-flock v0.8.1
 	github.com/yuin/gopher-lua v0.0.0-20220504180219-658193537a64
 )
 
 require (
-	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/cespare/xxhash/v2 v2.2.0 // indirect
+	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
+	github.com/fsnotify/fsnotify v1.6.0 // indirect
+	github.com/gofrs/flock v0.8.1 // indirect
+	github.com/hashicorp/hcl v1.0.0 // indirect
+	github.com/magiconair/properties v1.8.7 // indirect
 	github.com/mattn/go-colorable v0.1.12 // indirect
 	github.com/mattn/go-isatty v0.0.14 // indirect
-	golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e // indirect
+	github.com/mitchellh/mapstructure v1.5.0 // indirect
+	github.com/pelletier/go-toml/v2 v2.0.6 // indirect
+	github.com/spf13/afero v1.9.3 // indirect
+	github.com/spf13/cast v1.5.0 // indirect
+	github.com/spf13/jwalterweatherman v1.1.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/subosito/gotenv v1.4.2 // indirect
+	golang.org/x/sys v0.3.0 // indirect
+	golang.org/x/text v0.5.0 // indirect
+	gopkg.in/ini.v1 v1.67.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
diff --git a/go.sum b/go.sum
index 55959bc7..411cbddb 100644
--- a/go.sum
+++ b/go.sum
@@ -1,33 +1,511 @@
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
+cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
+cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
+cloud.google.com/go v0.44.3/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
+cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
+cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
+cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To=
+cloud.google.com/go v0.52.0/go.mod h1:pXajvRH/6o3+F9jDHZWQ5PbGhn+o8w9qiu/CffaVdO4=
+cloud.google.com/go v0.53.0/go.mod h1:fp/UouUEsRkN6ryDKNW/Upv/JBKnv6WDthjR6+vze6M=
+cloud.google.com/go v0.54.0/go.mod h1:1rq2OEkV3YMf6n/9ZvGWI3GWw0VoqH/1x2nd8Is/bPc=
+cloud.google.com/go v0.56.0/go.mod h1:jr7tqZxxKOVYizybht9+26Z/gUq7tiRzu+ACVAMbKVk=
+cloud.google.com/go v0.57.0/go.mod h1:oXiQ6Rzq3RAkkY7N6t3TcE6jE+CIBBbA36lwQ1JyzZs=
+cloud.google.com/go v0.62.0/go.mod h1:jmCYTdRCQuc1PHIIJ/maLInMho30T/Y0M4hTdTShOYc=
+cloud.google.com/go v0.65.0/go.mod h1:O5N8zS7uWy9vkA9vayVHs65eM1ubvY4h553ofrNHObY=
+cloud.google.com/go v0.72.0/go.mod h1:M+5Vjvlc2wnp6tjzE102Dw08nGShTscUx2nZMufOKPI=
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diff --git a/internal/client/func.go b/internal/client/func.go
index dcd0c1e0..9195683a 100644
--- a/internal/client/func.go
+++ b/internal/client/func.go
@@ -1,9 +1,10 @@
 package client
 
 import (
+	"RedisShake/internal/client/proto"
+	"RedisShake/internal/log"
 	"bytes"
-	"github.com/alibaba/RedisShake/internal/client/proto"
-	"github.com/alibaba/RedisShake/internal/log"
+	"strings"
 )
 
 func EncodeArgv(argv []string, buf *bytes.Buffer) {
@@ -15,6 +16,12 @@ func EncodeArgv(argv []string, buf *bytes.Buffer) {
 	}
 	err := writer.WriteArgs(argvInterface)
 	if err != nil {
-		log.PanicError(err)
+		log.Panicf(err.Error())
 	}
 }
+
+// IsCluster is for determining whether the server is in cluster mode.
+func (r *Redis) IsCluster() bool {
+	reply := r.DoWithStringReply("INFO", "Cluster")
+	return strings.Contains(reply, "cluster_enabled:1")
+}
diff --git a/internal/client/redis.go b/internal/client/redis.go
index 4d4d567c..d85cc8df 100644
--- a/internal/client/redis.go
+++ b/internal/client/redis.go
@@ -1,10 +1,10 @@
 package client
 
 import (
+	"RedisShake/internal/client/proto"
+	"RedisShake/internal/log"
 	"bufio"
 	"crypto/tls"
-	"github.com/alibaba/RedisShake/internal/client/proto"
-	"github.com/alibaba/RedisShake/internal/log"
 	"net"
 	"strconv"
 	"time"
@@ -17,19 +17,19 @@ type Redis struct {
 	protoWriter *proto.Writer
 }
 
-func NewRedisClient(address string, username string, password string, isTls bool) *Redis {
+func NewRedisClient(address string, username string, password string, Tls bool) *Redis {
 	r := new(Redis)
 	var conn net.Conn
 	var dialer net.Dialer
 	var err error
 	dialer.Timeout = 3 * time.Second
-	if isTls {
+	if Tls {
 		conn, err = tls.DialWithDialer(&dialer, "tcp", address, &tls.Config{InsecureSkipVerify: true})
 	} else {
 		conn, err = dialer.Dial("tcp", address)
 	}
 	if err != nil {
-		log.PanicError(err)
+		log.Panicf("dial failed. address=[%s], tls=[%v], err=[%v]", address, Tls, err)
 	}
 
 	r.reader = bufio.NewReader(conn)
@@ -48,14 +48,10 @@ func NewRedisClient(address string, username string, password string, isTls bool
 		if reply != "OK" {
 			log.Panicf("auth failed with reply: %s", reply)
 		}
-		log.Infof("auth successful. address=[%s]", address)
-	} else {
-		log.Infof("no password. address=[%s]", address)
 	}
 
 	// ping to test connection
 	reply := r.DoWithStringReply("ping")
-
 	if reply != "PONG" {
 		panic("ping failed with reply: " + reply)
 	}
@@ -68,7 +64,7 @@ func (r *Redis) DoWithStringReply(args ...string) string {
 
 	replyInterface, err := r.Receive()
 	if err != nil {
-		log.PanicError(err)
+		log.Panicf(err.Error())
 	}
 	reply := replyInterface.(string)
 	return reply
@@ -81,7 +77,7 @@ func (r *Redis) Send(args ...string) {
 	}
 	err := r.protoWriter.WriteArgs(argsInterface)
 	if err != nil {
-		log.PanicError(err)
+		log.Panicf(err.Error())
 	}
 	r.flush()
 }
@@ -89,7 +85,7 @@ func (r *Redis) Send(args ...string) {
 func (r *Redis) SendBytes(buf []byte) {
 	_, err := r.writer.Write(buf)
 	if err != nil {
-		log.PanicError(err)
+		log.Panicf(err.Error())
 	}
 	r.flush()
 }
@@ -97,7 +93,7 @@ func (r *Redis) SendBytes(buf []byte) {
 func (r *Redis) flush() {
 	err := r.writer.Flush()
 	if err != nil {
-		log.PanicError(err)
+		log.Panicf(err.Error())
 	}
 }
 
@@ -120,7 +116,7 @@ func (r *Redis) Scan(cursor uint64) (newCursor uint64, keys []string) {
 	r.Send("scan", strconv.FormatUint(cursor, 10), "count", "2048")
 	reply, err := r.Receive()
 	if err != nil {
-		log.PanicError(err)
+		log.Panicf(err.Error())
 	}
 
 	array := reply.([]interface{})
@@ -131,7 +127,7 @@ func (r *Redis) Scan(cursor uint64) (newCursor uint64, keys []string) {
 	// cursor
 	newCursor, err = strconv.ParseUint(array[0].(string), 10, 64)
 	if err != nil {
-		log.PanicError(err)
+		log.Panicf(err.Error())
 	}
 	// keys
 	keys = make([]string, 0)
diff --git a/internal/client/reply.go b/internal/client/reply.go
index ef385e71..b9a00cb2 100644
--- a/internal/client/reply.go
+++ b/internal/client/reply.go
@@ -1,10 +1,10 @@
 package client
 
-import "github.com/alibaba/RedisShake/internal/log"
+import "RedisShake/internal/log"
 
 func ArrayString(replyInterface interface{}, err error) []string {
 	if err != nil {
-		log.PanicError(err)
+		log.Panicf(err.Error())
 	}
 	replyArray := replyInterface.([]interface{})
 	replyArrayString := make([]string, len(replyArray))
diff --git a/internal/commands/keys.go b/internal/commands/keys.go
index 0899e055..6a2d4545 100644
--- a/internal/commands/keys.go
+++ b/internal/commands/keys.go
@@ -1,9 +1,9 @@
 package commands
 
 import (
+	"RedisShake/internal/log"
+	"RedisShake/internal/utils"
 	"fmt"
-	"github.com/alibaba/RedisShake/internal/log"
-	"github.com/alibaba/RedisShake/internal/utils"
 	"math"
 	"strconv"
 	"strings"
@@ -73,7 +73,7 @@ func CalcKeys(argv []string) (cmaName string, group string, keys []string) {
 			}
 			keyCount, err := strconv.Atoi(argv[keynumIdx])
 			if err != nil {
-				log.PanicError(err)
+				log.Panicf(err.Error())
 			}
 			firstKey := spec.findKeysKeynumFirstKey
 			step := spec.findKeysKeynumKeyStep
diff --git a/internal/config/config.go b/internal/config/config.go
index eb303abc..07d5c0f7 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -1,147 +1,88 @@
 package config
 
 import (
-	"bytes"
 	"fmt"
-	"github.com/pelletier/go-toml/v2"
-	"io/ioutil"
+	"github.com/mcuadros/go-defaults"
+	"github.com/rs/zerolog"
+	"github.com/spf13/viper"
 	"os"
-	"runtime"
 )
 
-type tomlSource struct {
-	// sync mode
-	Version          float32 `toml:"version"`
-	Address          string  `toml:"address"`
-	Username         string  `toml:"username"`
-	Password         string  `toml:"password"`
-	IsTLS            bool    `toml:"tls"`
-	ElastiCachePSync string  `toml:"elasticache_psync"`
+type AdvancedOptions struct {
+	Dir string `mapstructure:"dir" default:"data"`
 
-	// restore mode
-	RDBFilePath string `toml:"rdb_file_path"`
-}
-
-type tomlTarget struct {
-	Type     string  `toml:"type"`
-	Version  float32 `toml:"version"`
-	Username string  `toml:"username"`
-	Address  string  `toml:"address"`
-	Password string  `toml:"password"`
-	IsTLS    bool    `toml:"tls"`
-}
+	Ncpu int `mapstructure:"ncpu" default:"4"`
 
-type tomlAdvanced struct {
-	Dir string `toml:"dir"`
-
-	Ncpu int `toml:"ncpu"`
-
-	PprofPort   int `toml:"pprof_port"`
-	MetricsPort int `toml:"metrics_port"`
+	PprofPort  int `mapstructure:"pprof_port" default:"0"`
+	StatusPort int `mapstructure:"status_port" default:"6479"`
 
 	// log
-	LogFile     string `toml:"log_file"`
-	LogLevel    string `toml:"log_level"`
-	LogInterval int    `toml:"log_interval"`
-
-	// rdb restore
-	RDBRestoreCommandBehavior string `toml:"rdb_restore_command_behavior"`
-
-	// for writer
-	PipelineCountLimit              uint64 `toml:"pipeline_count_limit"`
-	TargetRedisClientMaxQuerybufLen uint64 `toml:"target_redis_client_max_querybuf_len"`
-	TargetRedisProtoMaxBulkLen      uint64 `toml:"target_redis_proto_max_bulk_len"`
+	LogFile     string `mapstructure:"log_file" default:"shake.log"`
+	LogLevel    string `mapstructure:"log_level" default:"info"`
+	LogInterval int    `mapstructure:"log_interval" default:"5"`
+
+	// redis-shake gets key and value from rdb file, and uses RESTORE command to
+	// create the key in target redis. Redis RESTORE will return a "Target key name
+	// is busy" error when key already exists. You can use this configuration item
+	// to change the default behavior of restore:
+	// panic:   redis-shake will stop when meet "Target key name is busy" error.
+	// rewrite: redis-shake will replace the key with new value.
+	// ignore:  redis-shake will skip restore the key when meet "Target key name is busy" error.
+	RDBRestoreCommandBehavior string `mapstructure:"rdb_restore_command_behavior" default:"panic"`
+
+	PipelineCountLimit              uint64 `mapstructure:"pipeline_count_limit" default:"1024"`
+	TargetRedisClientMaxQuerybufLen int64  `mapstructure:"target_redis_client_max_querybuf_len" default:"1024000000"`
+	TargetRedisProtoMaxBulkLen      uint64 `mapstructure:"target_redis_proto_max_bulk_len" default:"512000000"`
+
+	AwsPSync string `mapstructure:"aws_psync" default:""` // "ip:port@xxxpsync;ip:port@xxxpsync"
 }
 
-type tomlShakeConfig struct {
-	Type     string
-	Source   tomlSource
-	Target   tomlTarget
-	Advanced tomlAdvanced
+func (opt *AdvancedOptions) GetPSyncCommand(address string) string {
+	return fmt.Sprintf("psync %s 1 0", address)
 }
 
-var Config tomlShakeConfig
-
-func init() {
-	Config.Type = "sync"
-
-	// source
-	Config.Source.Version = 5.0
-	Config.Source.Address = ""
-	Config.Source.Username = ""
-	Config.Source.Password = ""
-	Config.Source.IsTLS = false
-	Config.Source.ElastiCachePSync = ""
-	// restore
-	Config.Source.RDBFilePath = ""
-
-	// target
-	Config.Target.Type = "standalone"
-	Config.Target.Version = 5.0
-	Config.Target.Address = ""
-	Config.Target.Username = ""
-	Config.Target.Password = ""
-	Config.Target.IsTLS = false
-
-	// advanced
-	Config.Advanced.Dir = "data"
-	Config.Advanced.Ncpu = 4
-	Config.Advanced.PprofPort = 0
-	Config.Advanced.MetricsPort = 0
-	Config.Advanced.LogFile = "redis-shake.log"
-	Config.Advanced.LogLevel = "info"
-	Config.Advanced.LogInterval = 5
-	Config.Advanced.RDBRestoreCommandBehavior = "rewrite"
-	Config.Advanced.PipelineCountLimit = 1024
-	Config.Advanced.TargetRedisClientMaxQuerybufLen = 1024 * 1000 * 1000
-	Config.Advanced.TargetRedisProtoMaxBulkLen = 512 * 1000 * 1000
+type ShakeOptions struct {
+	Transform string `mapstructure:"transform" default:""`
+	Advanced  AdvancedOptions
 }
 
-func LoadFromFile(filename string) {
-
-	buf, err := ioutil.ReadFile(filename)
-	if err != nil {
-		panic(err.Error())
-	}
+var Opt ShakeOptions
 
-	decoder := toml.NewDecoder(bytes.NewReader(buf))
-	decoder.SetStrict(true)
-	err = decoder.Decode(&Config)
-	if err != nil {
-		missingError, ok := err.(*toml.StrictMissingError)
-		if ok {
-			panic(fmt.Sprintf("decode config error:\n%s", missingError.String()))
-		}
-		panic(err.Error())
-	}
+func LoadConfig() *viper.Viper {
+	defaults.SetDefaults(&Opt)
 
-	// dir
-	err = os.MkdirAll(Config.Advanced.Dir, os.ModePerm)
-	if err != nil {
-		panic(err.Error())
+	v := viper.New()
+	if len(os.Args) > 2 {
+		fmt.Println("Usage: redis-shake [config file]")
+		fmt.Println("Example: ")
+		fmt.Println(" 		redis-shake sync.toml # load config from sync.toml")
+		fmt.Println("		redis-shake 		  # load config from environment variables")
+		os.Exit(1)
 	}
-	err = os.Chdir(Config.Advanced.Dir)
-	if err != nil {
-		panic(err.Error())
-	}
-
-	// cpu core
-	var ncpu int
-	if Config.Advanced.Ncpu == 0 {
-		ncpu = runtime.NumCPU()
-	} else {
-		ncpu = Config.Advanced.Ncpu
+	consoleWriter := zerolog.ConsoleWriter{Out: os.Stdout, TimeFormat: "2006-01-02 15:04:05"}
+	logger := zerolog.New(consoleWriter).With().Timestamp().Logger()
+	// load config from file
+	if len(os.Args) == 2 {
+		logger.Info().Msgf("load config from file: %s", os.Args[1])
+		configFile := os.Args[1]
+		v.SetConfigFile(configFile)
+		err := v.ReadInConfig()
+		if err != nil {
+			panic(err)
+		}
 	}
-	runtime.GOMAXPROCS(ncpu)
 
-	if Config.Source.Version < 2.8 {
-		panic("source redis version must be greater than 2.8")
-	}
-	if Config.Target.Version < 2.8 {
-		panic("target redis version must be greater than 2.8")
+	// load config from environment variables
+	if len(os.Args) == 1 {
+		logger.Warn().Msg("load config from environment variables")
+		v.SetConfigType("env")
+		v.AutomaticEnv()
 	}
 
-	if Config.Type != "sync" && Config.Type != "restore" && Config.Type != "scan" {
-		panic("type must be sync/restore/scan")
+	// unmarshal config
+	err := v.Unmarshal(&Opt)
+	if err != nil {
+		panic(err)
 	}
+	return v
 }
diff --git a/internal/entry/entry.go b/internal/entry/entry.go
index 28dfc46a..0356be54 100644
--- a/internal/entry/entry.go
+++ b/internal/entry/entry.go
@@ -1,22 +1,23 @@
 package entry
 
-import "fmt"
+import (
+	"RedisShake/internal/client/proto"
+	"RedisShake/internal/log"
+	"bytes"
+	"strings"
+)
 
 type Entry struct {
-	Id          uint64
-	IsBase      bool //  whether the command is decoded from dump.rdb file
-	DbId        int
-	Argv        []string
-	TimestampMs uint64
+	DbId int
+	Argv []string
 
 	CmdName string
 	Group   string
 	Keys    []string
 	Slots   []int
 
-	// for statistics
-	Offset      int64
-	EncodedSize uint64 // the size of the entry after encode
+	// for stat
+	SerializedSize int64
 }
 
 func NewEntry() *Entry {
@@ -24,6 +25,26 @@ func NewEntry() *Entry {
 	return e
 }
 
-func (e *Entry) ToString() string {
-	return fmt.Sprintf("%v", e.Argv)
+func (e *Entry) String() string {
+	str := strings.Join(e.Argv, " ")
+	if len(str) > 100 {
+		str = str[:100] + "..."
+	}
+	return str
+}
+
+func (e *Entry) Serialize() []byte {
+	buf := new(bytes.Buffer)
+	writer := proto.NewWriter(buf)
+	argvInterface := make([]interface{}, len(e.Argv))
+
+	for inx, item := range e.Argv {
+		argvInterface[inx] = item
+	}
+	err := writer.WriteArgs(argvInterface)
+	if err != nil {
+		log.Panicf(err.Error())
+	}
+	e.SerializedSize = int64(buf.Len())
+	return buf.Bytes()
 }
diff --git a/internal/filter/filter.go b/internal/filter/filter.go
deleted file mode 100644
index 0d93a309..00000000
--- a/internal/filter/filter.go
+++ /dev/null
@@ -1,55 +0,0 @@
-package filter
-
-import (
-	"github.com/alibaba/RedisShake/internal/entry"
-	lua "github.com/yuin/gopher-lua"
-)
-
-const (
-	Allow    = 0
-	Disallow = 1
-	Error    = 2
-)
-
-var luaInstance *lua.LState
-
-func LoadFromFile(luaFile string) {
-	luaInstance = lua.NewState()
-	err := luaInstance.DoFile(luaFile)
-	if err != nil {
-		panic(err)
-	}
-}
-
-func Filter(e *entry.Entry) int {
-	if luaInstance == nil {
-		return Allow
-	}
-	keys := luaInstance.NewTable()
-	for _, key := range e.Keys {
-		keys.Append(lua.LString(key))
-	}
-
-	slots := luaInstance.NewTable()
-	for _, slot := range e.Slots {
-		slots.Append(lua.LNumber(slot))
-	}
-
-	f := luaInstance.GetGlobal("filter")
-	luaInstance.Push(f)
-	luaInstance.Push(lua.LNumber(e.Id))          // id
-	luaInstance.Push(lua.LBool(e.IsBase))        // is_base
-	luaInstance.Push(lua.LString(e.Group))       // group
-	luaInstance.Push(lua.LString(e.CmdName))     // cmd name
-	luaInstance.Push(keys)                       // keys
-	luaInstance.Push(slots)                      // slots
-	luaInstance.Push(lua.LNumber(e.DbId))        // dbid
-	luaInstance.Push(lua.LNumber(e.TimestampMs)) // timestamp_ms
-
-	luaInstance.Call(8, 2)
-
-	code := int(luaInstance.Get(1).(lua.LNumber))
-	e.DbId = int(luaInstance.Get(2).(lua.LNumber))
-	luaInstance.Pop(2)
-	return code
-}
diff --git a/internal/log/func.go b/internal/log/func.go
index f9604648..899cc67f 100644
--- a/internal/log/func.go
+++ b/internal/log/func.go
@@ -1,16 +1,11 @@
 package log
 
 import (
-	"runtime/debug"
-	"strings"
+	"fmt"
+	"github.com/go-stack/stack"
+	"os"
 )
 
-func Assert(condition bool, msg string) {
-	if !condition {
-		Panicf("Assert failed: %s", msg)
-	}
-}
-
 func Debugf(format string, args ...interface{}) {
 	logger.Debug().Msgf(format, args...)
 }
@@ -24,20 +19,11 @@ func Warnf(format string, args ...interface{}) {
 }
 
 func Panicf(format string, args ...interface{}) {
-	stack := string(debug.Stack())
-	stack = strings.ReplaceAll(stack, "\n\t", "]<-")
-	stack = strings.ReplaceAll(stack, "\n", "  [")
-	logger.Info().Msg(stack)
-
-	logger.Panic().Msgf(format, args...)
-}
-
-func PanicError(err error) {
-	Panicf(err.Error())
-}
-
-func PanicIfError(err error) {
-	if err != nil {
-		PanicError(err)
+	frames := stack.Trace().TrimRuntime()
+	msgs := fmt.Sprintf(format, args...)
+	for _, frame := range frames {
+		msgs += fmt.Sprintf("\n%+v -> %n()", frame, frame)
 	}
+	logger.Error().Msg(msgs)
+	os.Exit(1)
 }
diff --git a/internal/log/init.go b/internal/log/init.go
index 793f0c58..cf36661e 100644
--- a/internal/log/init.go
+++ b/internal/log/init.go
@@ -1,18 +1,19 @@
 package log
 
 import (
+	"RedisShake/internal/config"
 	"fmt"
-	"github.com/alibaba/RedisShake/internal/config"
 	"github.com/rs/zerolog"
 	"os"
+	"path/filepath"
 )
 
 var logger zerolog.Logger
 
-func Init() {
+func Init(level string, file string) {
 
 	// log level
-	switch config.Config.Advanced.LogLevel {
+	switch level {
 	case "debug":
 		zerolog.SetGlobalLevel(zerolog.DebugLevel)
 	case "info":
@@ -20,15 +21,31 @@ func Init() {
 	case "warn":
 		zerolog.SetGlobalLevel(zerolog.WarnLevel)
 	default:
-		panic(fmt.Sprintf("unknown log level: %s", config.Config.Advanced.LogLevel))
+		panic(fmt.Sprintf("unknown log level: %s", level))
 	}
 
+	// dir
+	dir, err := filepath.Abs(config.Opt.Advanced.Dir)
+	if err != nil {
+		panic(fmt.Sprintf("failed to determine current directory: %v", err))
+	}
+	err = os.RemoveAll(dir)
+	if err != nil {
+		panic(fmt.Sprintf("remove dir failed. dir=[%s], error=[%v]", dir, err))
+	}
+	err = os.MkdirAll(dir, 0777)
+	if err != nil {
+		panic(fmt.Sprintf("mkdir failed. dir=[%s], error=[%v]", dir, err))
+	}
+	path := filepath.Join(dir, file)
+
 	// log file
 	consoleWriter := zerolog.ConsoleWriter{Out: os.Stdout, TimeFormat: "2006-01-02 15:04:05"}
-	fileWriter, err := os.OpenFile(config.Config.Advanced.LogFile, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0666)
+	fileWriter, err := os.OpenFile(path, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0666)
 	if err != nil {
-		panic(fmt.Sprintf("open log file failed: %s", err))
+		panic(fmt.Sprintf("open log file failed. file=[%s], err=[%s]", path, err))
 	}
 	multi := zerolog.MultiLevelWriter(consoleWriter, fileWriter)
 	logger = zerolog.New(multi).With().Timestamp().Logger()
+	Infof("log_level: [%v], log_file: [%v]", level, path)
 }
diff --git a/internal/rdb/rdb.go b/internal/rdb/rdb.go
index 45bd426b..46e5753a 100644
--- a/internal/rdb/rdb.go
+++ b/internal/rdb/rdb.go
@@ -1,16 +1,15 @@
 package rdb
 
 import (
+	"RedisShake/internal/config"
+	"RedisShake/internal/entry"
+	"RedisShake/internal/log"
+	"RedisShake/internal/rdb/structure"
+	"RedisShake/internal/rdb/types"
+	"RedisShake/internal/utils"
 	"bufio"
 	"bytes"
 	"encoding/binary"
-	"github.com/alibaba/RedisShake/internal/config"
-	"github.com/alibaba/RedisShake/internal/entry"
-	"github.com/alibaba/RedisShake/internal/log"
-	"github.com/alibaba/RedisShake/internal/rdb/structure"
-	"github.com/alibaba/RedisShake/internal/rdb/types"
-	"github.com/alibaba/RedisShake/internal/statistics"
-	"github.com/alibaba/RedisShake/internal/utils"
 	"io"
 	"os"
 	"strconv"
@@ -32,7 +31,7 @@ const (
 )
 
 type Loader struct {
-	replStreamDbId int // https://github.com/alibaba/RedisShake/pull/430#issuecomment-1099014464
+	replStreamDbId int // https://RedisShake/pull/430#issuecomment-1099014464
 
 	nowDBId  int
 	expireMs int64
@@ -44,15 +43,22 @@ type Loader struct {
 
 	ch         chan *entry.Entry
 	dumpBuffer bytes.Buffer
+
+	name       string
+	updateFunc func(int64)
 }
 
-func NewLoader(filPath string, ch chan *entry.Entry) *Loader {
+func NewLoader(name string, updateFunc func(int64), filPath string, ch chan *entry.Entry) *Loader {
 	ld := new(Loader)
 	ld.ch = ch
 	ld.filPath = filPath
+	ld.name = name
+	ld.updateFunc = updateFunc
 	return ld
 }
 
+// ParseRDB parse rdb file
+// return repl stream db id
 func (ld *Loader) ParseRDB() int {
 	var err error
 	ld.fp, err = os.OpenFile(ld.filPath, os.O_RDONLY, 0666)
@@ -66,43 +72,41 @@ func (ld *Loader) ParseRDB() int {
 		}
 	}()
 	rd := bufio.NewReader(ld.fp)
-	//magic + version
+	// magic + version
 	buf := make([]byte, 9)
 	_, err = io.ReadFull(rd, buf)
 	if err != nil {
-		log.PanicError(err)
+		log.Panicf(err.Error())
 	}
 	if !bytes.Equal(buf[:5], []byte("REDIS")) {
 		log.Panicf("verify magic string, invalid file format. bytes=[%v]", buf[:5])
 	}
 	version, err := strconv.Atoi(string(buf[5:]))
 	if err != nil {
-		log.PanicError(err)
+		log.Panicf(err.Error())
 	}
-	log.Infof("RDB version: %d", version)
+	log.Infof("[%s] RDB version: %d", ld.name, version)
 
 	// read entries
 	ld.parseRDBEntry(rd)
 
-	// force update rdb_sent_size for issue: https://github.com/alibaba/RedisShake/issues/485
-	fi, err := os.Stat(ld.filPath)
-	if err != nil {
-		log.Panicf("NewRDBReader: os.Stat error: %s", err.Error())
-	}
-	statistics.Metrics.RdbSendSize = uint64(fi.Size())
 	return ld.replStreamDbId
 }
 
 func (ld *Loader) parseRDBEntry(rd *bufio.Reader) {
 	// for stat
-	UpdateRDBSentSize := func() {
+	updateProcessSize := func() {
+		if ld.updateFunc == nil {
+			return
+		}
 		offset, err := ld.fp.Seek(0, io.SeekCurrent)
 		if err != nil {
-			log.PanicError(err)
+			log.Panicf(err.Error())
 		}
-		statistics.UpdateRDBSentSize(uint64(offset))
+		ld.updateFunc(offset)
 	}
-	defer UpdateRDBSentSize()
+	defer updateProcessSize()
+
 	// read one entry
 	tick := time.Tick(time.Second * 1)
 	for true {
@@ -119,22 +123,21 @@ func (ld *Loader) parseRDBEntry(rd *bufio.Reader) {
 				var err error
 				ld.replStreamDbId, err = strconv.Atoi(value)
 				if err != nil {
-					log.PanicError(err)
+					log.Panicf(err.Error())
 				}
-				log.Infof("RDB repl-stream-db: %d", ld.replStreamDbId)
+				log.Infof("[%s] RDB repl-stream-db: [%s]", ld.name, value)
 			} else if key == "lua" {
 				e := entry.NewEntry()
 				e.Argv = []string{"script", "load", value}
-				e.IsBase = true
 				ld.ch <- e
-				log.Infof("LUA script: [%s]", value)
+				log.Infof("[%s] LUA script: [%s]", ld.name, value)
 			} else {
-				log.Infof("RDB AUX fields. key=[%s], value=[%s]", key, value)
+				log.Infof("[%s] RDB AUX: key=[%s], value=[%s]", ld.name, key, value)
 			}
 		case kFlagResizeDB:
 			dbSize := structure.ReadLength(rd)
 			expireSize := structure.ReadLength(rd)
-			log.Infof("RDB resize db. db_size=[%d], expire_size=[%d]", dbSize, expireSize)
+			log.Infof("[%s] RDB resize db: db_size=[%d], expire_size=[%d]", ld.name, dbSize, expireSize)
 		case kFlagExpireMs:
 			ld.expireMs = int64(structure.ReadUint64(rd)) - time.Now().UnixMilli()
 			if ld.expireMs < 0 {
@@ -154,40 +157,37 @@ func (ld *Loader) parseRDBEntry(rd *bufio.Reader) {
 			var value bytes.Buffer
 			anotherReader := io.TeeReader(rd, &value)
 			o := types.ParseObject(anotherReader, typeByte, key)
-			if uint64(value.Len()) > config.Config.Advanced.TargetRedisProtoMaxBulkLen {
+			if uint64(value.Len()) > config.Opt.Advanced.TargetRedisProtoMaxBulkLen {
 				cmds := o.Rewrite()
 				for _, cmd := range cmds {
 					e := entry.NewEntry()
-					e.IsBase = true
 					e.DbId = ld.nowDBId
 					e.Argv = cmd
 					ld.ch <- e
 				}
 				if ld.expireMs != 0 {
 					e := entry.NewEntry()
-					e.IsBase = true
 					e.DbId = ld.nowDBId
 					e.Argv = []string{"PEXPIRE", key, strconv.FormatInt(ld.expireMs, 10)}
 					ld.ch <- e
 				}
 			} else {
 				e := entry.NewEntry()
-				e.IsBase = true
 				e.DbId = ld.nowDBId
 				v := ld.createValueDump(typeByte, value.Bytes())
 				e.Argv = []string{"restore", key, strconv.FormatInt(ld.expireMs, 10), v}
-				if config.Config.Advanced.RDBRestoreCommandBehavior == "rewrite" {
-					if config.Config.Target.Version < 3.0 {
-						log.Panicf("RDB restore command behavior is rewrite, but target redis version is %f, not support REPLACE modifier", config.Config.Target.Version)
-					}
+				if config.Opt.Advanced.RDBRestoreCommandBehavior == "rewrite" {
+					//if config.Opt.Target.Version < 3.0 {
+					//	log.Panicf("RDB restore command behavior is rewrite, but target redis version is %f, not support REPLACE modifier", config.Config.Target.Version)
+					//}
 					e.Argv = append(e.Argv, "replace")
 				}
-				if ld.idle != 0 && config.Config.Target.Version >= 5.0 {
-					e.Argv = append(e.Argv, "idletime", strconv.FormatInt(ld.idle, 10))
-				}
-				if ld.freq != 0 && config.Config.Target.Version >= 5.0 {
-					e.Argv = append(e.Argv, "freq", strconv.FormatInt(ld.freq, 10))
-				}
+				//if ld.idle != 0 && config.Config.Target.Version >= 5.0 {
+				//	e.Argv = append(e.Argv, "idletime", strconv.FormatInt(ld.idle, 10))
+				//}
+				//if ld.freq != 0 && config.Config.Target.Version >= 5.0 {
+				//	e.Argv = append(e.Argv, "freq", strconv.FormatInt(ld.freq, 10))
+				//}
 				ld.ch <- e
 			}
 			ld.expireMs = 0
@@ -196,7 +196,7 @@ func (ld *Loader) parseRDBEntry(rd *bufio.Reader) {
 		}
 		select {
 		case <-tick:
-			UpdateRDBSentSize()
+			updateProcessSize()
 		default:
 		}
 	}
diff --git a/internal/rdb/structure/byte.go b/internal/rdb/structure/byte.go
index d52df8ec..d8b0bed5 100644
--- a/internal/rdb/structure/byte.go
+++ b/internal/rdb/structure/byte.go
@@ -1,7 +1,7 @@
 package structure
 
 import (
-	"github.com/alibaba/RedisShake/internal/log"
+	"RedisShake/internal/log"
 	"io"
 )
 
@@ -14,7 +14,7 @@ func ReadBytes(rd io.Reader, n int) []byte {
 	buf := make([]byte, n)
 	_, err := io.ReadFull(rd, buf)
 	if err != nil {
-		log.PanicError(err)
+		log.Panicf(err.Error())
 	}
 	return buf
 }
diff --git a/internal/rdb/structure/float.go b/internal/rdb/structure/float.go
index 8351d96a..a254f863 100644
--- a/internal/rdb/structure/float.go
+++ b/internal/rdb/structure/float.go
@@ -1,8 +1,8 @@
 package structure
 
 import (
+	"RedisShake/internal/log"
 	"encoding/binary"
-	"github.com/alibaba/RedisShake/internal/log"
 	"io"
 	"math"
 	"strconv"
@@ -27,7 +27,7 @@ func ReadFloat(rd io.Reader) float64 {
 
 		v, err := strconv.ParseFloat(string(buf), 64)
 		if err != nil {
-			log.PanicError(err)
+			log.Panicf(err.Error())
 		}
 		return v
 	}
@@ -37,7 +37,7 @@ func ReadDouble(rd io.Reader) float64 {
 	var buf = make([]byte, 8)
 	_, err := io.ReadFull(rd, buf)
 	if err != nil {
-		log.PanicError(err)
+		log.Panicf(err.Error())
 	}
 	num := binary.LittleEndian.Uint64(buf)
 	return math.Float64frombits(num)
diff --git a/internal/rdb/structure/length.go b/internal/rdb/structure/length.go
index e62543fe..dc598c08 100644
--- a/internal/rdb/structure/length.go
+++ b/internal/rdb/structure/length.go
@@ -1,9 +1,9 @@
 package structure
 
 import (
+	"RedisShake/internal/log"
 	"encoding/binary"
 	"fmt"
-	"github.com/alibaba/RedisShake/internal/log"
 	"io"
 )
 
@@ -22,7 +22,7 @@ func ReadLength(rd io.Reader) uint64 {
 		log.Panicf("illegal length special=true, encoding: %d", length)
 	}
 	if err != nil {
-		log.PanicError(err)
+		log.Panicf(err.Error())
 	}
 	return length
 }
diff --git a/internal/rdb/structure/listpack.go b/internal/rdb/structure/listpack.go
index 2d30374a..ab4600a5 100644
--- a/internal/rdb/structure/listpack.go
+++ b/internal/rdb/structure/listpack.go
@@ -1,8 +1,8 @@
 package structure
 
 import (
+	"RedisShake/internal/log"
 	"bufio"
-	"github.com/alibaba/RedisShake/internal/log"
 	"io"
 	"math"
 	"strconv"
diff --git a/internal/rdb/structure/string.go b/internal/rdb/structure/string.go
index f53559e3..101148a1 100644
--- a/internal/rdb/structure/string.go
+++ b/internal/rdb/structure/string.go
@@ -1,7 +1,7 @@
 package structure
 
 import (
-	"github.com/alibaba/RedisShake/internal/log"
+	"RedisShake/internal/log"
 	"io"
 	"strconv"
 )
@@ -16,7 +16,7 @@ const (
 func ReadString(rd io.Reader) string {
 	length, special, err := readEncodedLength(rd)
 	if err != nil {
-		log.PanicError(err)
+		log.Panicf(err.Error())
 	}
 	if special {
 		switch length {
diff --git a/internal/rdb/structure/ziplist.go b/internal/rdb/structure/ziplist.go
index 141ea026..4dcd37f3 100644
--- a/internal/rdb/structure/ziplist.go
+++ b/internal/rdb/structure/ziplist.go
@@ -1,9 +1,9 @@
 package structure
 
 import (
+	"RedisShake/internal/log"
 	"bufio"
 	"encoding/binary"
-	"github.com/alibaba/RedisShake/internal/log"
 	"io"
 	"strconv"
 	"strings"
diff --git a/internal/rdb/types/hash.go b/internal/rdb/types/hash.go
index e27b67e8..2d373ae6 100644
--- a/internal/rdb/types/hash.go
+++ b/internal/rdb/types/hash.go
@@ -1,8 +1,8 @@
 package types
 
 import (
-	"github.com/alibaba/RedisShake/internal/log"
-	"github.com/alibaba/RedisShake/internal/rdb/structure"
+	"RedisShake/internal/log"
+	"RedisShake/internal/rdb/structure"
 	"io"
 )
 
diff --git a/internal/rdb/types/interface.go b/internal/rdb/types/interface.go
index 7d9fb3d5..1e237d75 100644
--- a/internal/rdb/types/interface.go
+++ b/internal/rdb/types/interface.go
@@ -1,7 +1,7 @@
 package types
 
 import (
-	"github.com/alibaba/RedisShake/internal/log"
+	"RedisShake/internal/log"
 	"io"
 )
 
diff --git a/internal/rdb/types/list.go b/internal/rdb/types/list.go
index 57e23c08..4f6b8dff 100644
--- a/internal/rdb/types/list.go
+++ b/internal/rdb/types/list.go
@@ -1,8 +1,8 @@
 package types
 
 import (
-	"github.com/alibaba/RedisShake/internal/log"
-	"github.com/alibaba/RedisShake/internal/rdb/structure"
+	"RedisShake/internal/log"
+	"RedisShake/internal/rdb/structure"
 	"io"
 )
 
diff --git a/internal/rdb/types/module2.go b/internal/rdb/types/module2.go
index 26ab46e0..73e01b06 100644
--- a/internal/rdb/types/module2.go
+++ b/internal/rdb/types/module2.go
@@ -1,8 +1,8 @@
 package types
 
 import (
-	"github.com/alibaba/RedisShake/internal/log"
-	"github.com/alibaba/RedisShake/internal/rdb/structure"
+	"RedisShake/internal/log"
+	"RedisShake/internal/rdb/structure"
 	"io"
 )
 
diff --git a/internal/rdb/types/set.go b/internal/rdb/types/set.go
index ac02f378..2f83b843 100644
--- a/internal/rdb/types/set.go
+++ b/internal/rdb/types/set.go
@@ -1,8 +1,8 @@
 package types
 
 import (
-	"github.com/alibaba/RedisShake/internal/log"
-	"github.com/alibaba/RedisShake/internal/rdb/structure"
+	"RedisShake/internal/log"
+	"RedisShake/internal/rdb/structure"
 	"io"
 )
 
diff --git a/internal/rdb/types/stream.go b/internal/rdb/types/stream.go
index 9b0a6b03..402affbc 100644
--- a/internal/rdb/types/stream.go
+++ b/internal/rdb/types/stream.go
@@ -1,10 +1,10 @@
 package types
 
 import (
+	"RedisShake/internal/log"
+	"RedisShake/internal/rdb/structure"
 	"encoding/binary"
 	"fmt"
-	"github.com/alibaba/RedisShake/internal/log"
-	"github.com/alibaba/RedisShake/internal/rdb/structure"
 	"io"
 	"strconv"
 )
diff --git a/internal/rdb/types/string.go b/internal/rdb/types/string.go
index 2adf51c6..6321fd36 100644
--- a/internal/rdb/types/string.go
+++ b/internal/rdb/types/string.go
@@ -1,7 +1,7 @@
 package types
 
 import (
-	"github.com/alibaba/RedisShake/internal/rdb/structure"
+	"RedisShake/internal/rdb/structure"
 	"io"
 )
 
diff --git a/internal/rdb/types/zset.go b/internal/rdb/types/zset.go
index 34f99b37..16f1d8a1 100644
--- a/internal/rdb/types/zset.go
+++ b/internal/rdb/types/zset.go
@@ -1,9 +1,9 @@
 package types
 
 import (
+	"RedisShake/internal/log"
+	"RedisShake/internal/rdb/structure"
 	"fmt"
-	"github.com/alibaba/RedisShake/internal/log"
-	"github.com/alibaba/RedisShake/internal/rdb/structure"
 	"io"
 )
 
diff --git a/internal/reader/interface.go b/internal/reader/interface.go
index 9d583e43..7ddc0d0a 100644
--- a/internal/reader/interface.go
+++ b/internal/reader/interface.go
@@ -1,7 +1,11 @@
 package reader
 
-import "github.com/alibaba/RedisShake/internal/entry"
+import (
+	"RedisShake/internal/entry"
+	"RedisShake/internal/status"
+)
 
 type Reader interface {
+	status.Statusable
 	StartRead() chan *entry.Entry
 }
diff --git a/internal/reader/psync.go b/internal/reader/psync.go
deleted file mode 100644
index 9745945c..00000000
--- a/internal/reader/psync.go
+++ /dev/null
@@ -1,247 +0,0 @@
-package reader
-
-import (
-	"bufio"
-	"github.com/alibaba/RedisShake/internal/client"
-	"github.com/alibaba/RedisShake/internal/entry"
-	"github.com/alibaba/RedisShake/internal/log"
-	"github.com/alibaba/RedisShake/internal/rdb"
-	"github.com/alibaba/RedisShake/internal/reader/rotate"
-	"github.com/alibaba/RedisShake/internal/statistics"
-	"io"
-	"io/ioutil"
-	"os"
-	"strconv"
-	"strings"
-	"time"
-)
-
-type psyncReader struct {
-	client  *client.Redis
-	address string
-	ch      chan *entry.Entry
-	DbId    int
-
-	rd               *bufio.Reader
-	receivedOffset   int64
-	elastiCachePSync string
-}
-
-func NewPSyncReader(address string, username string, password string, isTls bool, ElastiCachePSync string) Reader {
-	r := new(psyncReader)
-	r.address = address
-	r.elastiCachePSync = ElastiCachePSync
-	r.client = client.NewRedisClient(address, username, password, isTls)
-	r.rd = r.client.BufioReader()
-	log.Infof("psyncReader connected to redis successful. address=[%s]", address)
-	return r
-}
-
-func (r *psyncReader) StartRead() chan *entry.Entry {
-	r.ch = make(chan *entry.Entry, 1024)
-
-	go func() {
-		r.clearDir()
-		go r.sendReplconfAck()
-		r.saveRDB()
-		startOffset := r.receivedOffset
-		go r.saveAOF(r.rd)
-		r.sendRDB()
-		time.Sleep(1 * time.Second) // wait for saveAOF create aof file
-		r.sendAOF(startOffset)
-	}()
-
-	return r.ch
-}
-
-func (r *psyncReader) clearDir() {
-	files, err := ioutil.ReadDir("./")
-	if err != nil {
-		log.PanicError(err)
-	}
-
-	for _, f := range files {
-		if strings.HasSuffix(f.Name(), ".rdb") || strings.HasSuffix(f.Name(), ".aof") {
-			err = os.Remove(f.Name())
-			if err != nil {
-				log.PanicError(err)
-			}
-			log.Warnf("remove file. filename=[%s]", f.Name())
-		}
-	}
-}
-
-func (r *psyncReader) saveRDB() {
-	log.Infof("start save RDB. address=[%s]", r.address)
-	argv := []string{"replconf", "listening-port", "10007"} // 10007 is magic number
-	log.Infof("send %v", argv)
-	reply := r.client.DoWithStringReply(argv...)
-	if reply != "OK" {
-		log.Warnf("send replconf command to redis server failed. address=[%s], reply=[%s], error=[]", r.address, reply)
-	}
-
-	// send psync
-	argv = []string{"PSYNC", "?", "-1"}
-	if r.elastiCachePSync != "" {
-		argv = []string{r.elastiCachePSync, "?", "-1"}
-	}
-	r.client.Send(argv...)
-	log.Infof("send %v", argv)
-	// format: \n\n\n$<reply>\r\n
-	for true {
-		// \n\n\n$
-		b, err := r.rd.ReadByte()
-		if err != nil {
-			log.PanicError(err)
-		}
-		if b == '\n' {
-			continue
-		}
-		if b == '-' {
-			reply, err := r.rd.ReadString('\n')
-			if err != nil {
-				log.PanicError(err)
-			}
-			reply = strings.TrimSpace(reply)
-			log.Panicf("psync error. address=[%s], reply=[%s]", r.address, reply)
-		}
-		if b != '+' {
-			log.Panicf("invalid psync reply. address=[%s], b=[%s]", r.address, string(b))
-		}
-		break
-	}
-	reply, err := r.rd.ReadString('\n')
-	if err != nil {
-		log.PanicError(err)
-	}
-	reply = strings.TrimSpace(reply)
-	log.Infof("receive [%s]", reply)
-	masterOffset, err := strconv.Atoi(strings.Split(reply, " ")[2])
-	if err != nil {
-		log.PanicError(err)
-	}
-	r.receivedOffset = int64(masterOffset)
-
-	log.Infof("source db is doing bgsave. address=[%s]", r.address)
-	statistics.Metrics.IsDoingBgsave = true
-
-	timeStart := time.Now()
-	// format: \n\n\n$<length>\r\n<rdb>
-	for true {
-		// \n\n\n$
-		b, err := r.rd.ReadByte()
-		if err != nil {
-			log.PanicError(err)
-		}
-		if b == '\n' {
-			continue
-		}
-		if b != '$' {
-			log.Panicf("invalid rdb format. address=[%s], b=[%s]", r.address, string(b))
-		}
-		break
-	}
-	statistics.Metrics.IsDoingBgsave = false
-	log.Infof("source db bgsave finished. timeUsed=[%.2f]s, address=[%s]", time.Since(timeStart).Seconds(), r.address)
-	lengthStr, err := r.rd.ReadString('\n')
-	if err != nil {
-		log.PanicError(err)
-	}
-	lengthStr = strings.TrimSpace(lengthStr)
-	length, err := strconv.ParseInt(lengthStr, 10, 64)
-	if err != nil {
-		log.PanicError(err)
-	}
-	log.Infof("received rdb length. length=[%d]", length)
-	statistics.SetRDBFileSize(uint64(length))
-
-	// create rdb file
-	rdbFilePath := "dump.rdb"
-	log.Infof("create dump.rdb file. filename_path=[%s]", rdbFilePath)
-	rdbFileHandle, err := os.OpenFile(rdbFilePath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0666)
-	if err != nil {
-		log.PanicError(err)
-	}
-
-	// read rdb
-	remainder := length
-	const bufSize int64 = 32 * 1024 * 1024 // 32MB
-	buf := make([]byte, bufSize)
-	for remainder != 0 {
-		readOnce := bufSize
-		if remainder < readOnce {
-			readOnce = remainder
-		}
-		n, err := r.rd.Read(buf[:readOnce])
-		if err != nil {
-			log.PanicError(err)
-		}
-		remainder -= int64(n)
-		statistics.UpdateRDBReceivedSize(uint64(length - remainder))
-		_, err = rdbFileHandle.Write(buf[:n])
-		if err != nil {
-			log.PanicError(err)
-		}
-	}
-	err = rdbFileHandle.Close()
-	if err != nil {
-		log.PanicError(err)
-	}
-	log.Infof("save RDB finished. address=[%s], total_bytes=[%d]", r.address, length)
-}
-
-func (r *psyncReader) saveAOF(rd io.Reader) {
-	log.Infof("start save AOF. address=[%s]", r.address)
-	// create aof file
-	aofWriter := rotate.NewAOFWriter(r.receivedOffset)
-	defer aofWriter.Close()
-	buf := make([]byte, 16*1024) // 16KB is enough for writing file
-	for {
-		n, err := rd.Read(buf)
-		if err != nil {
-			log.PanicError(err)
-		}
-		r.receivedOffset += int64(n)
-		statistics.UpdateAOFReceivedOffset(uint64(r.receivedOffset))
-		aofWriter.Write(buf[:n])
-	}
-}
-
-func (r *psyncReader) sendRDB() {
-	// start parse rdb
-	log.Infof("start send RDB. address=[%s]", r.address)
-	rdbLoader := rdb.NewLoader("dump.rdb", r.ch)
-	r.DbId = rdbLoader.ParseRDB()
-	log.Infof("send RDB finished. address=[%s], repl-stream-db=[%d]", r.address, r.DbId)
-}
-
-func (r *psyncReader) sendAOF(offset int64) {
-	aofReader := rotate.NewAOFReader(offset)
-	defer aofReader.Close()
-	r.client.SetBufioReader(bufio.NewReader(aofReader))
-	for {
-		argv := client.ArrayString(r.client.Receive())
-		// select
-		if strings.EqualFold(argv[0], "select") {
-			DbId, err := strconv.Atoi(argv[1])
-			if err != nil {
-				log.PanicError(err)
-			}
-			r.DbId = DbId
-			continue
-		}
-
-		e := entry.NewEntry()
-		e.Argv = argv
-		e.DbId = r.DbId
-		e.Offset = aofReader.Offset()
-		r.ch <- e
-	}
-}
-
-func (r *psyncReader) sendReplconfAck() {
-	for range time.Tick(time.Millisecond * 100) {
-		// send ack receivedOffset
-		r.client.Send("replconf", "ack", strconv.FormatInt(r.receivedOffset, 10))
-	}
-}
diff --git a/internal/reader/rdb_reader.go b/internal/reader/rdb_reader.go
index ee6444ed..23b5a30f 100644
--- a/internal/reader/rdb_reader.go
+++ b/internal/reader/rdb_reader.go
@@ -1,48 +1,72 @@
 package reader
 
 import (
-	"github.com/alibaba/RedisShake/internal/entry"
-	"github.com/alibaba/RedisShake/internal/log"
-	"github.com/alibaba/RedisShake/internal/rdb"
-	"github.com/alibaba/RedisShake/internal/statistics"
-	"os"
-	"path/filepath"
+	"RedisShake/internal/entry"
+	"RedisShake/internal/log"
+	"RedisShake/internal/rdb"
+	"RedisShake/internal/utils"
+	"fmt"
+	"github.com/dustin/go-humanize"
 )
 
-type rdbReader struct {
-	path string
-	ch   chan *entry.Entry
+type RdbReaderOptions struct {
+	Filepath string `mapstructure:"filepath" default:""`
 }
 
-func NewRDBReader(path string) Reader {
-	log.Infof("NewRDBReader: path=[%s]", path)
-	absolutePath, err := filepath.Abs(path)
-	if err != nil {
-		log.Panicf("NewRDBReader: filepath.Abs error: %s", err.Error())
+type rdbReader struct {
+	ch chan *entry.Entry
+
+	stat struct {
+		Name          string `json:"name"`
+		Status        string `json:"status"`
+		Filepath      string `json:"filepath"`
+		FileSizeBytes int64  `json:"file_size_bytes"`
+		FileSizeHuman string `json:"file_size_human"`
+		FileSentBytes int64  `json:"file_sent_bytes"`
+		FileSentHuman string `json:"file_sent_human"`
+		Percent       string `json:"percent"`
 	}
-	log.Infof("NewRDBReader: absolute path=[%s]", absolutePath)
+}
+
+func NewRDBReader(opts *RdbReaderOptions) Reader {
+	absolutePath := utils.GetAbsPath(opts.Filepath)
 	r := new(rdbReader)
-	r.path = absolutePath
+	r.stat.Name = "rdb_reader"
+	r.stat.Status = "init"
+	r.stat.Filepath = absolutePath
+	r.stat.FileSizeBytes = int64(utils.GetFileSize(absolutePath))
+	r.stat.FileSizeHuman = humanize.Bytes(uint64(r.stat.FileSizeBytes))
 	return r
 }
 
 func (r *rdbReader) StartRead() chan *entry.Entry {
+	log.Infof("[%s] start read", r.stat.Name)
 	r.ch = make(chan *entry.Entry, 1024)
+	updateFunc := func(offset int64) {
+		r.stat.FileSentBytes = offset
+		r.stat.FileSentHuman = humanize.Bytes(uint64(offset))
+		r.stat.Percent = fmt.Sprintf("%.2f%%", float64(offset)/float64(r.stat.FileSizeBytes)*100)
+		r.stat.Status = fmt.Sprintf("[%s] rdb file synced: %s", r.stat.Name, r.stat.Percent)
+	}
+	rdbLoader := rdb.NewLoader(r.stat.Name, updateFunc, r.stat.Filepath, r.ch)
 
 	go func() {
-		// start parse rdb
-		log.Infof("start send RDB. path=[%s]", r.path)
-		fi, err := os.Stat(r.path)
-		if err != nil {
-			log.Panicf("NewRDBReader: os.Stat error: %s", err.Error())
-		}
-		statistics.Metrics.RdbFileSize = uint64(fi.Size())
-		statistics.Metrics.RdbReceivedSize = uint64(fi.Size())
-		rdbLoader := rdb.NewLoader(r.path, r.ch)
 		_ = rdbLoader.ParseRDB()
-		log.Infof("send RDB finished. path=[%s]", r.path)
+		log.Infof("[%s] rdb file parse done", r.stat.Name)
 		close(r.ch)
 	}()
 
 	return r.ch
 }
+
+func (r *rdbReader) Status() interface{} {
+	return r.stat
+}
+
+func (r *rdbReader) StatusString() string {
+	return r.stat.Status
+}
+
+func (r *rdbReader) StatusConsistent() bool {
+	return r.stat.FileSentBytes == r.stat.FileSizeBytes
+}
diff --git a/internal/reader/scan_cluster_reader.go b/internal/reader/scan_cluster_reader.go
new file mode 100644
index 00000000..898a9a88
--- /dev/null
+++ b/internal/reader/scan_cluster_reader.go
@@ -0,0 +1,73 @@
+package reader
+
+import (
+	"RedisShake/internal/entry"
+	"RedisShake/internal/utils"
+	"sync"
+)
+
+type ScanClusterReaderOptions struct {
+	Address  string `mapstructure:"address" default:""`
+	Username string `mapstructure:"username" default:""`
+	Password string `mapstructure:"password" default:""`
+	Tls      bool   `mapstructure:"tls" default:"false"`
+}
+
+type scanClusterReader struct {
+	readers []Reader
+}
+
+func NewScanClusterReader(opts *ScanClusterReaderOptions) Reader {
+	addresses, _ := utils.GetRedisClusterNodes(opts.Address, opts.Username, opts.Password, opts.Tls)
+
+	rd := &scanClusterReader{}
+	for _, address := range addresses {
+		rd.readers = append(rd.readers, NewScanStandaloneReader(&ScanStandaloneReaderOptions{
+			Address:  address,
+			Username: opts.Username,
+			Password: opts.Password,
+			Tls:      opts.Tls,
+		}))
+	}
+	return rd
+}
+
+func (rd *scanClusterReader) StartRead() chan *entry.Entry {
+	ch := make(chan *entry.Entry, 1024)
+	var wg sync.WaitGroup
+	for _, r := range rd.readers {
+		wg.Add(1)
+		go func(r Reader) {
+			for e := range r.StartRead() {
+				ch <- e
+			}
+			wg.Done()
+		}(r)
+	}
+	go func() {
+		wg.Wait()
+		close(ch)
+	}()
+	return ch
+}
+
+func (rd *scanClusterReader) Status() interface{} {
+	stat := make([]interface{}, 0)
+	for _, r := range rd.readers {
+		stat = append(stat, r.Status())
+	}
+	return stat
+}
+
+func (rd *scanClusterReader) StatusString() string {
+	return "scanClusterReader"
+}
+
+func (rd *scanClusterReader) StatusConsistent() bool {
+	for _, r := range rd.readers {
+		if !r.StatusConsistent() {
+			return false
+		}
+	}
+	return true
+}
diff --git a/internal/reader/scan_reader.go b/internal/reader/scan_reader.go
deleted file mode 100644
index b43d0297..00000000
--- a/internal/reader/scan_reader.go
+++ /dev/null
@@ -1,145 +0,0 @@
-package reader
-
-import (
-	"strconv"
-	"strings"
-
-	"github.com/alibaba/RedisShake/internal/client"
-	"github.com/alibaba/RedisShake/internal/client/proto"
-	"github.com/alibaba/RedisShake/internal/entry"
-	"github.com/alibaba/RedisShake/internal/log"
-	"github.com/alibaba/RedisShake/internal/statistics"
-)
-
-const (
-	// cluster_enabled: Indicate Redis cluster is enabled. reference from https://redis.io/commands/info/
-	clusterMode = "cluster_enabled:1"
-)
-
-type dbKey struct {
-	db       int
-	key      string
-	isSelect bool
-}
-
-type scanReader struct {
-	address string
-
-	// client for scan keys
-	clientScan   *client.Redis
-	innerChannel chan *dbKey
-	isCluster    bool
-
-	// client for dump keys
-	clientDump     *client.Redis
-	clientDumpDbid int
-	ch             chan *entry.Entry
-}
-
-func NewScanReader(address string, username string, password string, isTls bool) Reader {
-	r := new(scanReader)
-	r.address = address
-	r.clientScan = client.NewRedisClient(address, username, password, isTls)
-	r.clientDump = client.NewRedisClient(address, username, password, isTls)
-	log.Infof("scanReader connected to redis successful. address=[%s]", address)
-
-	r.isCluster = r.IsCluster()
-	return r
-}
-
-// IsCluster is for determining whether the server is in cluster mode.
-func (r *scanReader) IsCluster() bool {
-	reply := r.clientScan.DoWithStringReply("INFO", "Cluster")
-	return strings.Contains(reply, clusterMode)
-}
-
-func (r *scanReader) StartRead() chan *entry.Entry {
-	r.ch = make(chan *entry.Entry, 1024)
-	r.innerChannel = make(chan *dbKey, 1024)
-	go r.scan()
-	go r.fetch()
-	return r.ch
-}
-
-func (r *scanReader) scan() {
-	scanDbIdUpper := 15
-	if r.isCluster {
-		log.Infof("scanReader node are in cluster mode, only scan db 0")
-		scanDbIdUpper = 0
-	}
-	for dbId := 0; dbId <= scanDbIdUpper; dbId++ {
-		if !r.isCluster {
-			reply := r.clientScan.DoWithStringReply("SELECT", strconv.Itoa(dbId))
-			if reply != "OK" {
-				log.Panicf("scanReader select db failed. db=[%d]", dbId)
-			}
-
-			r.clientDump.Send("SELECT", strconv.Itoa(dbId))
-			r.innerChannel <- &dbKey{dbId, "", true}
-		}
-
-		var cursor uint64 = 0
-		for {
-			var keys []string
-			cursor, keys = r.clientScan.Scan(cursor)
-			for _, key := range keys {
-				r.clientDump.Send("DUMP", key)
-				r.clientDump.Send("PTTL", key)
-				r.innerChannel <- &dbKey{dbId, key, false}
-			}
-
-			// stat
-			statistics.Metrics.ScanDbId = dbId
-			statistics.Metrics.ScanCursor = cursor
-
-			if cursor == 0 {
-				break
-			}
-		}
-	}
-	close(r.innerChannel)
-}
-
-func (r *scanReader) fetch() {
-	var id uint64 = 0
-	for item := range r.innerChannel {
-		if item.isSelect {
-			// select
-			receive, err := client.String(r.clientDump.Receive())
-			if err != nil {
-				log.Panicf("scanReader select db failed. db=[%d], err=[%v]", item.db, err)
-			}
-			if receive != "OK" {
-				log.Panicf("scanReader select db failed. db=[%d]", item.db)
-			}
-		} else {
-			// dump
-			receive, err := client.String(r.clientDump.Receive())
-			if err != proto.Nil && err != nil { // error!
-				log.PanicIfError(err)
-			}
-
-			// pttl
-			pttl, pttlErr := client.Int64(r.clientDump.Receive())
-			log.PanicIfError(pttlErr)
-			if pttl < 0 {
-				pttl = 0
-			}
-
-			if err == proto.Nil { // key not exist
-				continue
-			}
-
-			id += 1
-			argv := []string{"RESTORE", item.key, strconv.FormatInt(pttl, 10), receive}
-			r.ch <- &entry.Entry{
-				Id:     id,
-				IsBase: false,
-				DbId:   item.db,
-				Argv:   argv,
-			}
-		}
-	}
-	log.Infof("scanReader fetch finished. address=[%s]", r.address)
-	close(r.ch)
-}
diff --git a/internal/reader/scan_standalone_reader.go b/internal/reader/scan_standalone_reader.go
new file mode 100644
index 00000000..dcd172b9
--- /dev/null
+++ b/internal/reader/scan_standalone_reader.go
@@ -0,0 +1,168 @@
+package reader
+
+import (
+	"RedisShake/internal/client"
+	"RedisShake/internal/client/proto"
+	"RedisShake/internal/config"
+	"RedisShake/internal/entry"
+	"RedisShake/internal/log"
+	"fmt"
+	"math/bits"
+	"strconv"
+	"strings"
+)
+
+type dbKey struct {
+	db       int
+	key      string
+	isSelect bool
+}
+
+type ScanStandaloneReaderOptions struct {
+	Address  string `mapstructure:"address" default:""`
+	Username string `mapstructure:"username" default:""`
+	Password string `mapstructure:"password" default:""`
+	Tls      bool   `mapstructure:"tls" default:"false"`
+}
+
+type scanStandaloneReader struct {
+	isCluster bool
+
+	// client for scan keys
+	clientScan   *client.Redis
+	innerChannel chan *dbKey
+
+	// client for dump keys
+	clientDump     *client.Redis
+	clientDumpDbid int
+	ch             chan *entry.Entry
+
+	stat struct {
+		Name          string `json:"name"`
+		Finished      bool   `json:"finished"`
+		DbId          int    `json:"dbId"`
+		Cursor        uint64 `json:"cursor"`
+		PercentByDbId string `json:"percent"`
+	}
+}
+
+func NewScanStandaloneReader(opts *ScanStandaloneReaderOptions) Reader {
+	r := new(scanStandaloneReader)
+	r.stat.Name = "reader_" + strings.Replace(opts.Address, ":", "_", -1)
+	r.clientScan = client.NewRedisClient(opts.Address, opts.Username, opts.Password, opts.Tls)
+	r.clientDump = client.NewRedisClient(opts.Address, opts.Username, opts.Password, opts.Tls)
+	r.isCluster = r.clientScan.IsCluster()
+	return r
+}
+
+func (r *scanStandaloneReader) StartRead() chan *entry.Entry {
+	r.ch = make(chan *entry.Entry, 1024)
+	r.innerChannel = make(chan *dbKey, 1024)
+	go r.scan()
+	go r.fetch()
+	return r.ch
+}
+
+func (r *scanStandaloneReader) scan() {
+	scanDbIdUpper := 15
+	if r.isCluster {
+		log.Infof("scanStandaloneReader node are in cluster mode, only scan db 0")
+		scanDbIdUpper = 0
+	}
+	for dbId := 0; dbId <= scanDbIdUpper; dbId++ {
+		if !r.isCluster {
+			reply := r.clientScan.DoWithStringReply("SELECT", strconv.Itoa(dbId))
+			if reply != "OK" {
+				log.Panicf("scanStandaloneReader select db failed. db=[%d]", dbId)
+			}
+
+			r.clientDump.Send("SELECT", strconv.Itoa(dbId))
+			r.innerChannel <- &dbKey{dbId, "", true}
+		}
+
+		var cursor uint64 = 0
+		for {
+			var keys []string
+			cursor, keys = r.clientScan.Scan(cursor)
+			for _, key := range keys {
+				r.clientDump.Send("DUMP", key)
+				r.clientDump.Send("PTTL", key)
+				r.innerChannel <- &dbKey{dbId, key, false}
+			}
+
+			// stat
+			r.stat.Cursor = cursor
+			r.stat.DbId = dbId
+			r.stat.PercentByDbId = fmt.Sprintf("%.2f%%", float64(bits.Reverse64(cursor))/float64(^uint(0))*100)
+
+			if cursor == 0 {
+				break
+			}
+		}
+	}
+	r.stat.Finished = true
+	close(r.innerChannel)
+}
+
+func (r *scanStandaloneReader) fetch() {
+	var id uint64 = 0
+	for item := range r.innerChannel {
+		if item.isSelect {
+			// select
+			receive, err := client.String(r.clientDump.Receive())
+			if err != nil {
+				log.Panicf("scanStandaloneReader select db failed. db=[%d], err=[%v]", item.db, err)
+			}
+			if receive != "OK" {
+				log.Panicf("scanStandaloneReader select db failed. db=[%d]", item.db)
+			}
+		} else {
+			// dump
+			receive, err := client.String(r.clientDump.Receive())
+			if err != proto.Nil && err != nil { // error!
+				log.Panicf(err.Error())
+			}
+
+			// pttl
+			pttl, pttlErr := client.Int64(r.clientDump.Receive())
+			if pttlErr != nil { // error!
+				log.Panicf(pttlErr.Error())
+			}
+			if pttl < 0 {
+				pttl = 0
+			}
+
+			if err == proto.Nil { // key not exist
+				continue
+			}
+
+			id += 1
+			argv := []string{"RESTORE", item.key, strconv.FormatInt(pttl, 10), receive}
+			if config.Opt.Advanced.RDBRestoreCommandBehavior == "rewrite" {
+				argv = append(argv, "replace")
+			}
+			log.Debugf("[%s] send command: [%v], dbid: [%v]", r.stat.Name, argv, item.db)
+			r.ch <- &entry.Entry{
+				DbId: item.db,
+				Argv: argv,
+			}
+		}
+	}
+	log.Infof("[%s] scanStandaloneReader fetch finished.", r.stat.Name)
+	close(r.ch)
+}
+
+func (r *scanStandaloneReader) Status() interface{} {
+	return r.stat
+}
+
+func (r *scanStandaloneReader) StatusString() string {
+	if r.stat.Finished {
+		return fmt.Sprintf("[%s] finished", r.stat.Name)
+	}
+	return fmt.Sprintf("[%s] dbid: [%d], percent: [%s]", r.stat.Name, r.stat.DbId, r.stat.PercentByDbId)
+}
+
+func (r *scanStandaloneReader) StatusConsistent() bool {
+	return r.stat.Finished
+}
diff --git a/internal/reader/sync_cluster_reader.go b/internal/reader/sync_cluster_reader.go
new file mode 100644
index 00000000..74cd3b9f
--- /dev/null
+++ b/internal/reader/sync_cluster_reader.go
@@ -0,0 +1,77 @@
+package reader
+
+import (
+	"RedisShake/internal/entry"
+	"RedisShake/internal/log"
+	"RedisShake/internal/utils"
+	"sync"
+)
+
+type SyncClusterReaderOptions struct {
+	Address  string `mapstructure:"address" default:""`
+	Username string `mapstructure:"username" default:""`
+	Password string `mapstructure:"password" default:""`
+	Tls      bool   `mapstructure:"tls" default:"false"`
+}
+
+type syncClusterReader struct {
+	readers []Reader
+}
+
+func NewSyncClusterReader(opts *SyncClusterReaderOptions) Reader {
+	addresses, _ := utils.GetRedisClusterNodes(opts.Address, opts.Username, opts.Password, opts.Tls)
+	log.Debugf("get redis cluster nodes:")
+	for _, address := range addresses {
+		log.Debugf("%s", address)
+	}
+	rd := &syncClusterReader{}
+	for _, address := range addresses {
+		rd.readers = append(rd.readers, NewSyncStandaloneReader(&SyncStandaloneReaderOptions{
+			Address:  address,
+			Username: opts.Username,
+			Password: opts.Password,
+			Tls:      opts.Tls,
+		}))
+	}
+	return rd
+}
+
+func (rd *syncClusterReader) StartRead() chan *entry.Entry {
+	ch := make(chan *entry.Entry, 1024)
+	var wg sync.WaitGroup
+	for _, r := range rd.readers {
+		wg.Add(1)
+		go func(r Reader) {
+			defer wg.Done()
+			for e := range r.StartRead() {
+				ch <- e
+			}
+		}(r)
+	}
+	go func() {
+		wg.Wait()
+		close(ch)
+	}()
+	return ch
+}
+
+func (rd *syncClusterReader) Status() interface{} {
+	stat := make([]interface{}, 0)
+	for _, r := range rd.readers {
+		stat = append(stat, r.Status())
+	}
+	return stat
+}
+
+func (rd *syncClusterReader) StatusString() string {
+	return "syncClusterReader"
+}
+
+func (rd *syncClusterReader) StatusConsistent() bool {
+	for _, r := range rd.readers {
+		if !r.StatusConsistent() {
+			return false
+		}
+	}
+	return true
+}
diff --git a/internal/reader/sync_standalone_reader.go b/internal/reader/sync_standalone_reader.go
new file mode 100644
index 00000000..c7362e8f
--- /dev/null
+++ b/internal/reader/sync_standalone_reader.go
@@ -0,0 +1,297 @@
+package reader
+
+import (
+	"RedisShake/internal/client"
+	"RedisShake/internal/config"
+	"RedisShake/internal/entry"
+	"RedisShake/internal/log"
+	"RedisShake/internal/rdb"
+	"RedisShake/internal/utils"
+	"RedisShake/internal/utils/file_rotate"
+	"bufio"
+	"fmt"
+	"github.com/dustin/go-humanize"
+	"io"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+	"time"
+)
+
+type SyncStandaloneReaderOptions struct {
+	Address  string `mapstructure:"address" default:""`
+	Username string `mapstructure:"username" default:""`
+	Password string `mapstructure:"password" default:""`
+	Tls      bool   `mapstructure:"tls" default:"false"`
+}
+
+type syncStandaloneReader struct {
+	client *client.Redis
+
+	ch   chan *entry.Entry
+	DbId int
+
+	rd *bufio.Reader
+
+	stat struct {
+		Name    string `json:"name"`
+		Address string `json:"address"`
+		Dir     string `json:"dir"`
+
+		// status
+		Status string `json:"status"`
+
+		// rdb info
+		RdbFilePath      string `json:"rdb_file_path"`
+		RdbFileSizeBytes int64  `json:"rdb_file_size_bytes"` // bytes of the rdb file
+		RdbFIleSizeHuman string `json:"rdb_file_size_human"`
+		RdbReceivedBytes int64  `json:"rdb_received_bytes"` // bytes of RDB received from master
+		RdbReceivedHuman string `json:"rdb_received_human"`
+		RdbSentBytes     int64  `json:"rdb_sent_bytes"` // bytes of RDB sent to chan
+		RdbSentHuman     string `json:"rdb_sent_human"`
+
+		// aof info
+		AofReceivedOffset int64  `json:"aof_received_offset"` // offset of AOF received from master
+		AofSentOffset     int64  `json:"aof_sent_offset"`     // offset of AOF sent to chan
+		AofReceivedBytes  int64  `json:"aof_received_bytes"`  // bytes of AOF received from master
+		AofReceivedHuman  string `json:"aof_received_human"`
+	}
+}
+
+func NewSyncStandaloneReader(opts *SyncStandaloneReaderOptions) Reader {
+	r := new(syncStandaloneReader)
+	r.client = client.NewRedisClient(opts.Address, opts.Username, opts.Password, opts.Tls)
+	r.rd = r.client.BufioReader()
+	r.stat.Name = "reader_" + strings.Replace(opts.Address, ":", "_", -1)
+	r.stat.Address = opts.Address
+	r.stat.Status = "init"
+	r.stat.Dir = utils.GetAbsPath(r.stat.Name)
+	utils.CreateEmptyDir(r.stat.Dir)
+	return r
+}
+
+func (r *syncStandaloneReader) StartRead() chan *entry.Entry {
+	r.ch = make(chan *entry.Entry, 1024)
+	go func() {
+		r.sendReplconfListenPort()
+		r.sendPSync()
+		go r.sendReplconfAck() // start sent replconf ack
+		r.receiveRDB()
+		startOffset := r.stat.AofReceivedOffset
+		go r.receiveAOF(r.rd)
+		r.sendRDB()
+		r.sendAOF(startOffset)
+	}()
+
+	return r.ch
+}
+
+func (r *syncStandaloneReader) sendReplconfListenPort() {
+	// use status_port as redis-shake port
+	argv := []string{"replconf", "listening-port", strconv.Itoa(config.Opt.Advanced.StatusPort)}
+	r.client.Send(argv...)
+	reply, err := r.client.Receive()
+	if err != nil {
+		log.Warnf("[%s] send replconf command to redis server failed. reply=[%s], error=[%v]", r.stat.Name, reply, err)
+	}
+	if reply != "OK" {
+		log.Warnf("[%s] send replconf command to redis server failed. reply=[%s]", r.stat.Name, reply)
+	}
+}
+
+func (r *syncStandaloneReader) sendPSync() {
+	// send PSync
+	argv := []string{"PSYNC", "?", "-1"}
+	if config.Opt.Advanced.AwsPSync != "" {
+		argv = []string{config.Opt.Advanced.AwsPSync, "?", "-1"} // TODO AWS PSYNC
+	}
+	r.client.Send(argv...)
+
+	// format: \n\n\n+<reply>\r\n
+	for true { // TODO better way to parse psync reply
+		// \n\n\n+
+		b, err := r.rd.ReadByte()
+		if err != nil {
+			log.Panicf(err.Error())
+		}
+		if b == '\n' {
+			continue
+		}
+		if b == '-' {
+			reply, err := r.rd.ReadString('\n')
+			if err != nil {
+				log.Panicf(err.Error())
+			}
+			reply = strings.TrimSpace(reply)
+			log.Panicf("psync error. name=[%s], reply=[%s]", r.stat.Name, reply)
+		}
+		if b != '+' {
+			log.Panicf("invalid psync reply. name=[%s], b=[%s]", r.stat.Name, string(b))
+		}
+		break
+	}
+	reply, err := r.rd.ReadString('\n')
+	if err != nil {
+		log.Panicf(err.Error())
+	}
+	reply = strings.TrimSpace(reply)
+
+	masterOffset, err := strconv.Atoi(strings.Split(reply, " ")[2])
+	if err != nil {
+		log.Panicf(err.Error())
+	}
+	r.stat.AofReceivedOffset = int64(masterOffset)
+}
+
+func (r *syncStandaloneReader) receiveRDB() {
+	log.Infof("[%s] source db is doing bgsave.", r.stat.Name)
+	r.stat.Status = "source db is doing bgsave"
+	timeStart := time.Now()
+	// format: \n\n\n$<length>\r\n<rdb>
+	for true {
+		b, err := r.rd.ReadByte()
+		if err != nil {
+			log.Panicf(err.Error())
+		}
+		if b == '\n' {
+			continue
+		}
+		if b != '$' {
+			log.Panicf("[%s] invalid rdb format. b=[%s]", r.stat.Name, string(b))
+		}
+		break
+	}
+	log.Infof("[%s] source db bgsave finished. timeUsed=[%.2f]s", r.stat.Name, time.Since(timeStart).Seconds())
+	lengthStr, err := r.rd.ReadString('\n')
+	if err != nil {
+		log.Panicf(err.Error())
+	}
+	lengthStr = strings.TrimSpace(lengthStr)
+	length, err := strconv.ParseInt(lengthStr, 10, 64)
+	if err != nil {
+		log.Panicf(err.Error())
+	}
+	log.Infof("[%s] rdb length=[%d]", r.stat.Name, length)
+	r.stat.RdbFileSizeBytes = length
+	r.stat.RdbFIleSizeHuman = humanize.IBytes(uint64(length))
+
+	// create rdb file
+	r.stat.RdbFilePath, err = filepath.Abs(r.stat.Name + "/dump.rdb")
+	if err != nil {
+		log.Panicf(err.Error())
+	}
+	log.Infof("[%s] start receiving RDB. path=[%s]", r.stat.Name, r.stat.RdbFilePath)
+	rdbFileHandle, err := os.OpenFile(r.stat.RdbFilePath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0666)
+	if err != nil {
+		log.Panicf(err.Error())
+	}
+
+	// receive rdb
+	r.stat.Status = fmt.Sprintf("[%s]: receiving RDB", r.stat.Name)
+	remainder := length
+	const bufSize int64 = 32 * 1024 * 1024 // 32MB
+	buf := make([]byte, bufSize)
+	for remainder != 0 {
+		readOnce := bufSize
+		if remainder < readOnce {
+			readOnce = remainder
+		}
+		n, err := r.rd.Read(buf[:readOnce])
+		if err != nil {
+			log.Panicf(err.Error())
+		}
+		remainder -= int64(n)
+		_, err = rdbFileHandle.Write(buf[:n])
+		if err != nil {
+			log.Panicf(err.Error())
+		}
+
+		r.stat.RdbReceivedBytes += int64(n)
+		r.stat.RdbReceivedHuman = humanize.IBytes(uint64(r.stat.RdbReceivedBytes))
+	}
+	err = rdbFileHandle.Close()
+	if err != nil {
+		log.Panicf(err.Error())
+	}
+	log.Infof("[%s] save RDB finished.", r.stat.Name)
+}
+
+func (r *syncStandaloneReader) receiveAOF(rd io.Reader) {
+	log.Infof("[%s] start receiving aof data, and save to file", r.stat.Name)
+	aofWriter := rotate.NewAOFWriter(r.stat.Name, r.stat.Dir, r.stat.AofReceivedOffset)
+	defer aofWriter.Close()
+	buf := make([]byte, 16*1024) // 16KB is enough for writing file
+	for {
+		n, err := rd.Read(buf)
+		if err != nil {
+			log.Panicf(err.Error())
+		}
+		r.stat.AofReceivedBytes += int64(n)
+		r.stat.AofReceivedHuman = humanize.IBytes(uint64(r.stat.AofReceivedBytes))
+		aofWriter.Write(buf[:n])
+		r.stat.AofReceivedOffset += int64(n)
+	}
+}
+
+func (r *syncStandaloneReader) sendRDB() {
+	// start parse rdb
+	log.Infof("[%s] start sending RDB to target", r.stat.Name)
+	r.stat.Status = fmt.Sprintf("[%s]: sending RDB to target", r.stat.Name)
+	updateFunc := func(offset int64) {
+		r.stat.RdbSentBytes = offset
+		r.stat.RdbSentHuman = humanize.IBytes(uint64(offset))
+	}
+	rdbLoader := rdb.NewLoader(r.stat.Name, updateFunc, r.stat.RdbFilePath, r.ch)
+	r.DbId = rdbLoader.ParseRDB()
+	log.Infof("[%s] send RDB finished", r.stat.Name)
+}
+
+func (r *syncStandaloneReader) sendAOF(offset int64) {
+	time.Sleep(1 * time.Second) // wait for receiveAOF create aof file
+	aofReader := rotate.NewAOFReader(r.stat.Name, r.stat.Dir, offset)
+	defer aofReader.Close()
+	r.client.SetBufioReader(bufio.NewReader(aofReader))
+	for {
+		argv := client.ArrayString(r.client.Receive())
+		r.stat.AofSentOffset = aofReader.Offset()
+		// select
+		if strings.EqualFold(argv[0], "select") {
+			DbId, err := strconv.Atoi(argv[1])
+			if err != nil {
+				log.Panicf(err.Error())
+			}
+			r.DbId = DbId
+			continue
+		}
+
+		e := entry.NewEntry()
+		e.Argv = argv
+		e.DbId = r.DbId
+		r.ch <- e
+		r.stat.Status = fmt.Sprintf("[%s]: sending aof to target", r.stat.Name)
+	}
+}
+
+// sendReplconfAck send replconf ack to master to keep heartbeat between redis-shake and source redis.
+func (r *syncStandaloneReader) sendReplconfAck() {
+	for range time.Tick(time.Millisecond * 100) {
+		if r.stat.AofReceivedOffset != 0 {
+			r.client.Send("replconf", "ack", strconv.FormatInt(r.stat.AofReceivedOffset, 10))
+		}
+	}
+}
+
+func (r *syncStandaloneReader) Status() interface{} {
+	return r.stat
+}
+
+func (r *syncStandaloneReader) StatusString() string {
+	return r.stat.Status
+}
+
+func (r *syncStandaloneReader) StatusConsistent() bool {
+	return r.stat.AofReceivedOffset != 0 &&
+		r.stat.AofReceivedOffset == r.stat.AofSentOffset &&
+		len(r.ch) == 0
+}
diff --git a/internal/statistics/statistics.go b/internal/statistics/statistics.go
deleted file mode 100644
index 9af801d5..00000000
--- a/internal/statistics/statistics.go
+++ /dev/null
@@ -1,157 +0,0 @@
-package statistics
-
-import (
-	"encoding/json"
-	"fmt"
-	"github.com/alibaba/RedisShake/internal/config"
-	"github.com/alibaba/RedisShake/internal/log"
-	"math/bits"
-	"net/http"
-	"strings"
-	"time"
-)
-
-type metrics struct {
-	// info
-	Address string `json:"address"`
-
-	// entries
-	EntryId              uint64 `json:"entry_id"`
-	AllowEntriesCount    uint64 `json:"allow_entries_count"`
-	DisallowEntriesCount uint64 `json:"disallow_entries_count"`
-
-	// rdb
-	IsDoingBgsave   bool   `json:"is_doing_bgsave"`
-	RdbFileSize     uint64 `json:"rdb_file_size"`
-	RdbReceivedSize uint64 `json:"rdb_received_size"`
-	RdbSendSize     uint64 `json:"rdb_send_size"`
-
-	// aof
-	AofReceivedOffset uint64 `json:"aof_received_offset"`
-	AofAppliedOffset  uint64 `json:"aof_applied_offset"`
-
-	// for performance debug
-	InQueueEntriesCount  uint64 `json:"in_queue_entries_count"`
-	UnansweredBytesCount uint64 `json:"unanswered_bytes_count"`
-
-	// scan cursor
-	ScanDbId   int    `json:"scan_db_id"`
-	ScanCursor uint64 `json:"scan_cursor"`
-
-	// for log
-	Msg string `json:"msg"`
-}
-
-var Metrics = &metrics{}
-
-func Handler(w http.ResponseWriter, _ *http.Request) {
-	w.Header().Add("Content-Type", "application/json")
-	err := json.NewEncoder(w).Encode(Metrics)
-	if err != nil {
-		log.PanicError(err)
-	}
-}
-
-func Init() {
-	go func() {
-		seconds := config.Config.Advanced.LogInterval
-		if seconds <= 0 {
-			log.Infof("statistics disabled. seconds=[%d]", seconds)
-		}
-
-		lastAllowEntriesCount := Metrics.AllowEntriesCount
-		lastDisallowEntriesCount := Metrics.DisallowEntriesCount
-
-		for range time.Tick(time.Duration(seconds) * time.Second) {
-			// scan
-			if config.Config.Type == "scan" {
-				Metrics.Msg = fmt.Sprintf("syncing. dbId=[%d], percent=[%.2f]%%, allowOps=[%.2f], disallowOps=[%.2f], entryId=[%d], InQueueEntriesCount=[%d], unansweredBytesCount=[%d]bytes",
-					Metrics.ScanDbId,
-					float64(bits.Reverse64(Metrics.ScanCursor))/float64(^uint(0))*100,
-					float32(Metrics.AllowEntriesCount-lastAllowEntriesCount)/float32(seconds),
-					float32(Metrics.DisallowEntriesCount-lastDisallowEntriesCount)/float32(seconds),
-					Metrics.EntryId,
-					Metrics.InQueueEntriesCount,
-					Metrics.UnansweredBytesCount)
-				log.Infof(strings.Replace(Metrics.Msg, "%", "%%", -1))
-				lastAllowEntriesCount = Metrics.AllowEntriesCount
-				lastDisallowEntriesCount = Metrics.DisallowEntriesCount
-				continue
-			}
-			// sync or restore
-			if Metrics.RdbFileSize == 0 {
-				Metrics.Msg = "source db is doing bgsave"
-			} else if Metrics.RdbSendSize > Metrics.RdbReceivedSize {
-				Metrics.Msg = fmt.Sprintf("receiving rdb. percent=[%.2f]%%, rdbFileSize=[%.3f]G, rdbReceivedSize=[%.3f]G",
-					float64(Metrics.RdbReceivedSize)/float64(Metrics.RdbFileSize)*100,
-					float64(Metrics.RdbFileSize)/1024/1024/1024,
-					float64(Metrics.RdbReceivedSize)/1024/1024/1024)
-			} else if Metrics.RdbFileSize > Metrics.RdbSendSize {
-				Metrics.Msg = fmt.Sprintf("syncing rdb. percent=[%.2f]%%, allowOps=[%.2f], disallowOps=[%.2f], entryId=[%d], InQueueEntriesCount=[%d], unansweredBytesCount=[%d]bytes, rdbFileSize=[%.3f]G, rdbSendSize=[%.3f]G",
-					float64(Metrics.RdbSendSize)*100/float64(Metrics.RdbFileSize),
-					float32(Metrics.AllowEntriesCount-lastAllowEntriesCount)/float32(seconds),
-					float32(Metrics.DisallowEntriesCount-lastDisallowEntriesCount)/float32(seconds),
-					Metrics.EntryId,
-					Metrics.InQueueEntriesCount,
-					Metrics.UnansweredBytesCount,
-					float64(Metrics.RdbFileSize)/1024/1024/1024,
-					float64(Metrics.RdbSendSize)/1024/1024/1024)
-			} else {
-				Metrics.Msg = fmt.Sprintf("syncing aof. allowOps=[%.2f], disallowOps=[%.2f], entryId=[%d], InQueueEntriesCount=[%d], unansweredBytesCount=[%d]bytes, diff=[%d], aofReceivedOffset=[%d], aofAppliedOffset=[%d]",
-					float32(Metrics.AllowEntriesCount-lastAllowEntriesCount)/float32(seconds),
-					float32(Metrics.DisallowEntriesCount-lastDisallowEntriesCount)/float32(seconds),
-					Metrics.EntryId,
-					Metrics.InQueueEntriesCount,
-					Metrics.UnansweredBytesCount,
-					Metrics.AofReceivedOffset-Metrics.AofAppliedOffset,
-					Metrics.AofReceivedOffset,
-					Metrics.AofAppliedOffset)
-			}
-			log.Infof(strings.Replace(Metrics.Msg, "%", "%%", -1))
-			lastAllowEntriesCount = Metrics.AllowEntriesCount
-			lastDisallowEntriesCount = Metrics.DisallowEntriesCount
-		}
-	}()
-}
-
-// entry id
-
-func UpdateEntryId(id uint64) {
-	Metrics.EntryId = id
-}
-func AddAllowEntriesCount() {
-	Metrics.AllowEntriesCount++
-}
-func AddDisallowEntriesCount() {
-	Metrics.DisallowEntriesCount++
-}
-
-// rdb
-
-func SetRDBFileSize(size uint64) {
-	Metrics.RdbFileSize = size
-}
-func UpdateRDBReceivedSize(size uint64) {
-	Metrics.RdbReceivedSize = size
-}
-func UpdateRDBSentSize(offset uint64) {
-	Metrics.RdbSendSize = offset
-}
-
-// aof
-
-func UpdateAOFReceivedOffset(offset uint64) {
-	Metrics.AofReceivedOffset = offset
-}
-func UpdateAOFAppliedOffset(offset uint64) {
-	Metrics.AofAppliedOffset = offset
-}
-
-// for debug
-
-func UpdateInQueueEntriesCount(count uint64) {
-	Metrics.InQueueEntriesCount = count
-}
-func UpdateUnansweredBytesCount(count uint64) {
-	Metrics.UnansweredBytesCount = count
-}
diff --git a/internal/status/entry_count.go b/internal/status/entry_count.go
new file mode 100644
index 00000000..3b0c312c
--- /dev/null
+++ b/internal/status/entry_count.go
@@ -0,0 +1,35 @@
+package status
+
+import (
+	"fmt"
+	"time"
+)
+
+type EntryCount struct {
+	Allow       uint64  `json:"allow"`
+	Disallow    uint64  `json:"disallow"`
+	AllowOps    float64 `json:"allow_ops"`
+	DisallowOps float64 `json:"disallow_ops"`
+
+	// update ops
+	lastAllow              uint64
+	lastDisallow           uint64
+	lastUpdateTimestampSec float64
+}
+
+// call this function every second
+func (e *EntryCount) updateOPS() {
+	nowTimestampSec := float64(time.Now().UnixNano()) / 1e9
+	if e.lastUpdateTimestampSec != 0 {
+		timeIntervalSec := nowTimestampSec - e.lastUpdateTimestampSec
+		e.AllowOps = float64(e.Allow-e.lastAllow) / timeIntervalSec
+		e.DisallowOps = float64(e.Disallow-e.lastDisallow) / timeIntervalSec
+		e.lastAllow = e.Allow
+		e.lastDisallow = e.Disallow
+	}
+	e.lastUpdateTimestampSec = nowTimestampSec
+}
+
+func (e *EntryCount) String() string {
+	return fmt.Sprintf("allow: %.2fops/s, disallow: %.2fops/s", e.AllowOps, e.DisallowOps)
+}
diff --git a/internal/status/handler.go b/internal/status/handler.go
new file mode 100644
index 00000000..c0069cf8
--- /dev/null
+++ b/internal/status/handler.go
@@ -0,0 +1,53 @@
+package status
+
+import (
+	"RedisShake/internal/config"
+	"RedisShake/internal/log"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"time"
+)
+
+func Handler(w http.ResponseWriter, _ *http.Request) {
+	w.Header().Add("Content-Type", "application/json")
+
+	bytesChannel := make(chan []byte, 1)
+
+	ch <- func() {
+		stat.Consistent = theReader.StatusConsistent() && theWriter.StatusConsistent()
+		jsonBytes, err := json.Marshal(stat)
+		if err != nil {
+			log.Warnf("marshal status info failed, err=[%v]", err)
+			bytesChannel <- []byte(fmt.Sprintf(`{"error": "%v"}`, err))
+			return
+		}
+		bytesChannel <- jsonBytes
+	}
+
+	select {
+	case bytes := <-bytesChannel:
+		_, err := w.Write(bytes)
+		if err != nil {
+			log.Warnf("write status info failed, err=[%v]", err)
+		}
+	case <-time.After(time.Second * 3):
+		log.Warnf("write status info timeout")
+		w.WriteHeader(http.StatusRequestTimeout)
+	}
+}
+
+func setStatusPort() {
+	if config.Opt.Advanced.StatusPort != 0 {
+		go func() {
+			addr := fmt.Sprintf(":%d", config.Opt.Advanced.StatusPort)
+			if err := http.ListenAndServe(addr, http.HandlerFunc(Handler)); err != nil {
+				log.Panicf(err.Error())
+			}
+		}()
+		log.Infof("status information: http://localhost:%v", config.Opt.Advanced.StatusPort)
+		log.Infof("status information: watch -n 0.3 'curl -s http://localhost:%v | python -m json.tool'", config.Opt.Advanced.StatusPort)
+	} else {
+		log.Infof("not set status port")
+	}
+}
diff --git a/internal/status/status.go b/internal/status/status.go
new file mode 100644
index 00000000..e21b5de2
--- /dev/null
+++ b/internal/status/status.go
@@ -0,0 +1,110 @@
+package status
+
+import (
+	"RedisShake/internal/config"
+	"RedisShake/internal/log"
+	"time"
+)
+
+type Statusable interface {
+	Status() interface{}
+	StatusString() string
+	StatusConsistent() bool
+}
+
+type Stat struct {
+	Time       string `json:"start_time"`
+	Consistent bool   `json:"consistent"`
+	// transform
+	TotalEntriesCount  EntryCount            `json:"total_entries_count"`
+	PerCmdEntriesCount map[string]EntryCount `json:"per_cmd_entries_count"`
+	// reader
+	Reader interface{} `json:"reader"`
+	// writer
+	Writer interface{} `json:"writer"`
+}
+
+var ch = make(chan func(), 1000)
+var stat = new(Stat)
+var theReader Statusable
+var theWriter Statusable
+
+func AddEntryCount(cmd string, allow bool) {
+	ch <- func() {
+		if stat.PerCmdEntriesCount == nil {
+			stat.PerCmdEntriesCount = make(map[string]EntryCount)
+		}
+		cmdEntryCount, ok := stat.PerCmdEntriesCount[cmd]
+		if !ok {
+			cmdEntryCount = EntryCount{}
+			stat.PerCmdEntriesCount[cmd] = cmdEntryCount
+		}
+		if allow {
+			stat.TotalEntriesCount.Allow += 1
+			cmdEntryCount.Allow += 1
+		} else {
+			stat.TotalEntriesCount.Disallow += 1
+			cmdEntryCount.Disallow += 1
+		}
+		stat.PerCmdEntriesCount[cmd] = cmdEntryCount
+	}
+}
+
+func Init(r Statusable, w Statusable) {
+	theReader = r
+	theWriter = w
+	setStatusPort()
+	stat.Time = time.Now().Format("2006-01-02 15:04:05")
+
+	// for update reader/writer stat
+	go func() {
+		ticker := time.NewTicker(1 * time.Second)
+		defer ticker.Stop()
+		lastConsistent := false
+		for {
+			select {
+			case <-ticker.C:
+				ch <- func() {
+					// update reader/writer stat
+					stat.Reader = theReader.Status()
+					stat.Writer = theWriter.Status()
+					stat.Consistent = lastConsistent && theReader.StatusConsistent() && theWriter.StatusConsistent()
+					lastConsistent = stat.Consistent
+					// update OPS
+					stat.TotalEntriesCount.updateOPS()
+					for _, cmdEntryCount := range stat.PerCmdEntriesCount {
+						cmdEntryCount.updateOPS()
+					}
+				}
+			}
+		}
+	}()
+
+	// for log to screen
+	go func() {
+		if config.Opt.Advanced.LogInterval <= 0 {
+			log.Infof("log interval is 0, will not log to screen")
+			return
+		}
+		ticker := time.NewTicker(time.Duration(config.Opt.Advanced.LogInterval) * time.Second)
+		defer ticker.Stop()
+		for {
+			select {
+			case <-ticker.C:
+				ch <- func() {
+					log.Infof("%s, %s, %s",
+						stat.TotalEntriesCount.String(),
+						theReader.StatusString(),
+						theWriter.StatusString())
+				}
+			}
+		}
+	}()
+
+	// run all func in ch
+	go func() {
+		for f := range ch {
+			f()
+		}
+	}()
+}
diff --git a/internal/transform/transform.go b/internal/transform/transform.go
new file mode 100644
index 00000000..39697fb0
--- /dev/null
+++ b/internal/transform/transform.go
@@ -0,0 +1,63 @@
+package transform
+
+import (
+	"RedisShake/internal/config"
+	"RedisShake/internal/entry"
+	"RedisShake/internal/log"
+	lua "github.com/yuin/gopher-lua"
+	"strings"
+)
+
+const (
+	Allow    = 0
+	Disallow = 1
+	Error    = 2
+)
+
+var luaInstance *lua.LState
+
+func Init() {
+	luaString := config.Opt.Transform
+	luaString = strings.TrimSpace(luaString)
+	if len(luaString) == 0 {
+		log.Infof("no transform script")
+		return
+	}
+	luaInstance = lua.NewState()
+	err := luaInstance.DoString(luaString)
+	if err != nil {
+		log.Panicf("load transform script failed: %v", err)
+	}
+	log.Infof("load transform script success")
+}
+
+func Transform(e *entry.Entry) int {
+	if luaInstance == nil {
+		return Allow
+	}
+
+	keys := luaInstance.NewTable()
+	for _, key := range e.Keys {
+		keys.Append(lua.LString(key))
+	}
+
+	slots := luaInstance.NewTable()
+	for _, slot := range e.Slots {
+		slots.Append(lua.LNumber(slot))
+	}
+
+	f := luaInstance.GetGlobal("filter")
+	luaInstance.Push(f)
+	luaInstance.Push(lua.LString(e.Group))   // group
+	luaInstance.Push(lua.LString(e.CmdName)) // cmd name
+	luaInstance.Push(keys)                   // keys
+	luaInstance.Push(slots)                  // slots
+	luaInstance.Push(lua.LNumber(e.DbId))    // dbid
+
+	luaInstance.Call(8, 2)
+
+	code := int(luaInstance.Get(1).(lua.LNumber))
+	e.DbId = int(luaInstance.Get(2).(lua.LNumber))
+	luaInstance.Pop(2)
+	return code
+}
diff --git a/internal/utils/cluster_nodes.go b/internal/utils/cluster_nodes.go
new file mode 100644
index 00000000..1c0eaead
--- /dev/null
+++ b/internal/utils/cluster_nodes.go
@@ -0,0 +1,74 @@
+package utils
+
+import (
+	"RedisShake/internal/client"
+	"RedisShake/internal/log"
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+func GetRedisClusterNodes(address string, username string, password string, Tls bool) (addresses []string, slots [][]int) {
+	c := client.NewRedisClient(address, username, password, Tls)
+	reply := c.DoWithStringReply("cluster", "nodes")
+	reply = strings.TrimSpace(reply)
+	slotsCount := 0
+	for _, line := range strings.Split(reply, "\n") {
+		line = strings.TrimSpace(line)
+		words := strings.Split(line, " ")
+		if !strings.Contains(words[2], "master") {
+			continue
+		}
+		if len(words) < 9 {
+			log.Panicf("invalid cluster nodes line: %s", line)
+		}
+		log.Infof("redisClusterWriter load cluster nodes. line=%v", line)
+
+		// address
+		address := strings.Split(words[1], "@")[0]
+		// handle ipv6 address
+		tok := strings.Split(address, ":")
+		if len(tok) > 2 {
+			// ipv6 address
+			port := tok[len(tok)-1]
+
+			ipv6Addr := strings.Join(tok[:len(tok)-1], ":")
+			address = fmt.Sprintf("[%s]:%s", ipv6Addr, port)
+		}
+		addresses = append(addresses, address)
+
+		// parse slots
+		slot := make([]int, 0)
+		for i := 8; i < len(words); i++ {
+			words[i] = strings.TrimSpace(words[i])
+			var start, end int
+			var err error
+			if strings.Contains(words[i], "-") {
+				seg := strings.Split(words[i], "-")
+				start, err = strconv.Atoi(seg[0])
+				if err != nil {
+					log.Panicf(err.Error())
+				}
+				end, err = strconv.Atoi(seg[1])
+				if err != nil {
+					log.Panicf(err.Error())
+				}
+			} else {
+				start, err = strconv.Atoi(words[i])
+				if err != nil {
+					log.Panicf(err.Error())
+				}
+				end = start
+			}
+			for j := start; j <= end; j++ {
+				slot = append(slot, j)
+				slotsCount++
+			}
+			slots = append(slots, slot)
+		}
+	}
+	if slotsCount != 16384 {
+		log.Panicf("invalid cluster nodes slots. slots_count=%v, address=%v", slotsCount, address)
+	}
+	return addresses, slots
+}
diff --git a/internal/utils/file.go b/internal/utils/file.go
index 47fb7c07..28d3fec5 100644
--- a/internal/utils/file.go
+++ b/internal/utils/file.go
@@ -1,18 +1,49 @@
 package utils
 
 import (
-	"github.com/alibaba/RedisShake/internal/log"
+	"RedisShake/internal/log"
 	"os"
+	"path/filepath"
 )
 
-func DoesFileExist(fileName string) bool {
-	_, err := os.Stat(fileName)
+func CreateEmptyDir(dir string) {
+	if IsExist(dir) {
+		err := os.RemoveAll(dir)
+		if err != nil {
+			log.Panicf("remove dir failed. dir=[%s], error=[%v]", dir, err)
+		}
+	}
+	err := os.MkdirAll(dir, 0777)
+	if err != nil {
+		log.Panicf("mkdir failed. dir=[%s], error=[%v]", dir, err)
+	}
+	log.Debugf("CreateEmptyDir: dir=[%s]", dir)
+}
+
+func IsExist(path string) bool {
+	_, err := os.Stat(path)
 	if err != nil {
 		if os.IsNotExist(err) {
 			return false
 		} else {
-			log.PanicError(err)
+			log.Panicf(err.Error())
 		}
 	}
 	return true
 }
+
+func GetFileSize(path string) uint64 {
+	fi, err := os.Stat(path)
+	if err != nil {
+		log.Panicf(err.Error())
+	}
+	return uint64(fi.Size())
+}
+
+func GetAbsPath(path string) string {
+	absolutePath, err := filepath.Abs(path)
+	if err != nil {
+		log.Panicf(err.Error())
+	}
+	return absolutePath
+}
diff --git a/internal/reader/rotate/aof_reader.go b/internal/utils/file_rotate/aof_reader.go
similarity index 55%
rename from internal/reader/rotate/aof_reader.go
rename to internal/utils/file_rotate/aof_reader.go
index f5ba676c..f0c79fce 100644
--- a/internal/reader/rotate/aof_reader.go
+++ b/internal/utils/file_rotate/aof_reader.go
@@ -1,44 +1,48 @@
 package rotate
 
 import (
+	"RedisShake/internal/log"
+	"RedisShake/internal/utils"
 	"fmt"
-	"github.com/alibaba/RedisShake/internal/log"
-	"github.com/alibaba/RedisShake/internal/utils"
 	"io"
 	"os"
 	"time"
 )
 
 type AOFReader struct {
+	name     string
+	dir      string
 	file     *os.File
 	offset   int64
 	pos      int64
-	filename string
+	filepath string
 }
 
-func NewAOFReader(offset int64) *AOFReader {
+func NewAOFReader(name string, dir string, offset int64) *AOFReader {
 	r := new(AOFReader)
+	r.name = name
+	r.dir = dir
 	r.openFile(offset)
 	return r
 }
 
 func (r *AOFReader) openFile(offset int64) {
-	r.filename = fmt.Sprintf("%d.aof", offset)
+	r.filepath = fmt.Sprintf("%s/%d.aof", r.dir, r.offset)
 	var err error
-	r.file, err = os.OpenFile(r.filename, os.O_RDONLY, 0644)
+	r.file, err = os.OpenFile(r.filepath, os.O_RDONLY, 0644)
 	if err != nil {
-		log.PanicError(err)
+		log.Panicf(err.Error())
 	}
 	r.offset = offset
 	r.pos = 0
-	log.Infof("AOFReader open file. aof_filename=[%s]", r.filename)
+	log.Infof("[%s] open file for read. filename=[%s]", r.name, r.filepath)
 }
 
 func (r *AOFReader) readNextFile(offset int64) {
-	filename := fmt.Sprintf("%d.aof", offset)
-	if utils.DoesFileExist(filename) {
+	filepath := fmt.Sprintf("%s/%d.aof", r.dir, r.offset)
+	if utils.IsExist(filepath) {
 		r.Close()
-		err := os.Remove(r.filename)
+		err := os.Remove(r.filepath)
 		if err != nil {
 			return
 		}
@@ -49,18 +53,18 @@ func (r *AOFReader) readNextFile(offset int64) {
 func (r *AOFReader) Read(buf []byte) (n int, err error) {
 	n, err = r.file.Read(buf)
 	for err == io.EOF {
-		if r.filename != fmt.Sprintf("%d.aof", r.offset) {
+		if r.filepath != fmt.Sprintf("%s/%d.aof", r.dir, r.offset) {
 			r.readNextFile(r.offset)
 		}
 		time.Sleep(time.Millisecond * 10)
 		_, err = r.file.Seek(0, 1)
 		if err != nil {
-			log.PanicError(err)
+			log.Panicf(err.Error())
 		}
 		n, err = r.file.Read(buf)
 	}
 	if err != nil {
-		log.PanicError(err)
+		log.Panicf(err.Error())
 	}
 	r.offset += int64(n)
 	r.pos += int64(n)
@@ -77,8 +81,8 @@ func (r *AOFReader) Close() {
 	}
 	err := r.file.Close()
 	if err != nil {
-		log.PanicError(err)
+		log.Panicf(err.Error())
 	}
 	r.file = nil
-	log.Infof("AOFReader close file. aof_filename=[%s]", r.filename)
+	log.Infof("[%s] close file. filename=[%s]", r.name, r.filepath)
 }
diff --git a/internal/reader/rotate/aof_writer.go b/internal/utils/file_rotate/aof_writer.go
similarity index 55%
rename from internal/reader/rotate/aof_writer.go
rename to internal/utils/file_rotate/aof_writer.go
index 0e58474f..b4828964 100644
--- a/internal/reader/rotate/aof_writer.go
+++ b/internal/utils/file_rotate/aof_writer.go
@@ -1,42 +1,47 @@
 package rotate
 
 import (
+	"RedisShake/internal/log"
 	"fmt"
-	"github.com/alibaba/RedisShake/internal/log"
 	"os"
 )
 
 const MaxFileSize = 1024 * 1024 * 1024 // 1G
 
 type AOFWriter struct {
+	name string
+	dir  string
+
 	file     *os.File
 	offset   int64
-	filename string
+	filepath string
 	filesize int64
 }
 
-func NewAOFWriter(offset int64) *AOFWriter {
-	w := &AOFWriter{}
+func NewAOFWriter(name string, dir string, offset int64) *AOFWriter {
+	w := new(AOFWriter)
+	w.name = name
+	w.dir = dir
 	w.openFile(offset)
 	return w
 }
 
 func (w *AOFWriter) openFile(offset int64) {
-	w.filename = fmt.Sprintf("%d.aof", offset)
+	w.filepath = fmt.Sprintf("%s/%d.aof", w.dir, w.offset)
 	var err error
-	w.file, err = os.OpenFile(w.filename, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0644)
+	w.file, err = os.OpenFile(w.filepath, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0644)
 	if err != nil {
-		log.PanicError(err)
+		log.Panicf(err.Error())
 	}
 	w.offset = offset
 	w.filesize = 0
-	log.Infof("AOFWriter open file. filename=[%s]", w.filename)
+	log.Infof("[%s] open file for write. filename=[%s]", w.name, w.filepath)
 }
 
 func (w *AOFWriter) Write(buf []byte) {
 	_, err := w.file.Write(buf)
 	if err != nil {
-		log.PanicError(err)
+		log.Panicf(err.Error())
 	}
 	w.offset += int64(len(buf))
 	w.filesize += int64(len(buf))
@@ -46,7 +51,7 @@ func (w *AOFWriter) Write(buf []byte) {
 	}
 	err = w.file.Sync()
 	if err != nil {
-		log.PanicError(err)
+		log.Panicf(err.Error())
 	}
 }
 
@@ -56,11 +61,11 @@ func (w *AOFWriter) Close() {
 	}
 	err := w.file.Sync()
 	if err != nil {
-		log.PanicError(err)
+		log.Panicf(err.Error())
 	}
 	err = w.file.Close()
 	if err != nil {
-		log.PanicError(err)
+		log.Panicf(err.Error())
 	}
-	log.Infof("AOFWriter close file. filename=[%s], filesize=[%d]", w.filename, w.filesize)
+	log.Infof("[%s] close file. filename=[%s], filesize=[%d]", w.name, w.filepath, w.filesize)
 }
diff --git a/internal/utils/filelock.go b/internal/utils/filelock.go
new file mode 100644
index 00000000..69b1acb4
--- /dev/null
+++ b/internal/utils/filelock.go
@@ -0,0 +1,46 @@
+package utils
+
+import (
+	"RedisShake/internal/config"
+	"RedisShake/internal/log"
+	"github.com/theckman/go-flock"
+	"os"
+	"path/filepath"
+)
+
+var filelock *flock.Flock
+
+func ChdirAndAcquireFileLock() {
+	// dir
+	dir, err := filepath.Abs(config.Opt.Advanced.Dir)
+	if err != nil {
+		log.Panicf("failed to determine current directory: %v", err)
+	}
+	// create dir
+	err = os.MkdirAll(dir, os.ModePerm)
+	if err != nil {
+		log.Panicf("failed to create dir. dir: %v, err: %v", dir, err)
+	}
+	filelock = flock.New(filepath.Join(dir, "pid.lockfile"))
+	locked, err := filelock.TryLock()
+	if err != nil {
+		log.Panicf("failed to lock pid file: %v", err)
+	}
+	if !locked {
+		log.Warnf("failed to lock pid file")
+	}
+	err = os.Chdir(dir) // change dir
+	if err != nil {
+		log.Panicf("failed to change dir. dir: %v, err: %v", dir, err)
+	}
+	log.Infof("changed work dir to [%s]", dir)
+}
+
+func ReleaseFileLock() {
+	if filelock != nil {
+		err := filelock.Unlock()
+		if err != nil {
+			log.Warnf("failed to unlock pid file: %v", err)
+		}
+	}
+}
diff --git a/internal/utils/ncpu.go b/internal/utils/ncpu.go
new file mode 100644
index 00000000..0d2adb39
--- /dev/null
+++ b/internal/utils/ncpu.go
@@ -0,0 +1,17 @@
+package utils
+
+import (
+	"RedisShake/internal/config"
+	"RedisShake/internal/log"
+	"runtime"
+)
+
+func SetNcpu() {
+	if config.Opt.Advanced.Ncpu != 0 {
+		log.Infof("set ncpu to %d", config.Opt.Advanced.Ncpu)
+		runtime.GOMAXPROCS(config.Opt.Advanced.Ncpu)
+		log.Infof("set GOMAXPROCS to %v", config.Opt.Advanced.Ncpu)
+	} else {
+		log.Infof("GOMAXPROCS defaults to the value of runtime.NumCPU %v", runtime.NumCPU())
+	}
+}
diff --git a/internal/utils/pprof.go b/internal/utils/pprof.go
new file mode 100644
index 00000000..a7884307
--- /dev/null
+++ b/internal/utils/pprof.go
@@ -0,0 +1,23 @@
+package utils
+
+import (
+	"RedisShake/internal/config"
+	"RedisShake/internal/log"
+	"fmt"
+	"net/http"
+)
+
+func SetPprofPort() {
+	// pprof_port
+	if config.Opt.Advanced.PprofPort != 0 {
+		go func() {
+			err := http.ListenAndServe(fmt.Sprintf("localhost:%d", config.Opt.Advanced.PprofPort), nil)
+			if err != nil {
+				log.Panicf(err.Error())
+			}
+		}()
+		log.Infof("pprof information: http://localhost:%d/debug/pprof/", config.Opt.Advanced.PprofPort)
+	} else {
+		log.Infof("not set pprof port")
+	}
+}
diff --git a/internal/writer/interface.go b/internal/writer/interface.go
index 679d2001..523f14fb 100644
--- a/internal/writer/interface.go
+++ b/internal/writer/interface.go
@@ -1,8 +1,12 @@
 package writer
 
-import "github.com/alibaba/RedisShake/internal/entry"
+import (
+	"RedisShake/internal/entry"
+	"RedisShake/internal/status"
+)
 
 type Writer interface {
+	status.Statusable
 	Write(entry *entry.Entry)
 	Close()
 }
diff --git a/internal/writer/redis.go b/internal/writer/redis.go
deleted file mode 100644
index c3502451..00000000
--- a/internal/writer/redis.go
+++ /dev/null
@@ -1,96 +0,0 @@
-package writer
-
-import (
-	"bytes"
-	"github.com/alibaba/RedisShake/internal/client"
-	"github.com/alibaba/RedisShake/internal/client/proto"
-	"github.com/alibaba/RedisShake/internal/config"
-	"github.com/alibaba/RedisShake/internal/entry"
-	"github.com/alibaba/RedisShake/internal/log"
-	"github.com/alibaba/RedisShake/internal/statistics"
-	"strconv"
-	"strings"
-	"sync"
-	"sync/atomic"
-	"time"
-)
-
-type redisWriter struct {
-	client *client.Redis
-	DbId   int
-
-	cmdBuffer   *bytes.Buffer
-	chWaitReply chan *entry.Entry
-	chWg        sync.WaitGroup
-
-	UpdateUnansweredBytesCount uint64 // have sent in bytes
-}
-
-func NewRedisWriter(address string, username string, password string, isTls bool) Writer {
-	rw := new(redisWriter)
-	rw.client = client.NewRedisClient(address, username, password, isTls)
-	log.Infof("redisWriter connected to redis successful. address=[%s]", address)
-	rw.cmdBuffer = new(bytes.Buffer)
-	rw.chWaitReply = make(chan *entry.Entry, config.Config.Advanced.PipelineCountLimit)
-	rw.chWg.Add(1)
-	go rw.flushInterval()
-	return rw
-}
-
-func (w *redisWriter) Write(e *entry.Entry) {
-	// switch db if we need
-	if w.DbId != e.DbId {
-		w.switchDbTo(e.DbId)
-	}
-
-	// send
-	w.cmdBuffer.Reset()
-	client.EncodeArgv(e.Argv, w.cmdBuffer)
-	e.EncodedSize = uint64(w.cmdBuffer.Len())
-	for e.EncodedSize+atomic.LoadUint64(&w.UpdateUnansweredBytesCount) > config.Config.Advanced.TargetRedisClientMaxQuerybufLen {
-		time.Sleep(1 * time.Nanosecond)
-	}
-	w.chWaitReply <- e
-	atomic.AddUint64(&w.UpdateUnansweredBytesCount, e.EncodedSize)
-	w.client.SendBytes(w.cmdBuffer.Bytes())
-}
-
-func (w *redisWriter) switchDbTo(newDbId int) {
-	w.client.Send("select", strconv.Itoa(newDbId))
-	w.DbId = newDbId
-	w.chWaitReply <- &entry.Entry{
-		Argv:    []string{"select", strconv.Itoa(newDbId)},
-		CmdName: "select",
-	}
-}
-
-func (w *redisWriter) flushInterval() {
-	for e := range w.chWaitReply {
-		reply, err := w.client.Receive()
-		if err == proto.Nil {
-			log.Warnf("redisWriter receive nil reply. argv=%v", e.Argv)
-		} else if err != nil {
-			if err.Error() == "BUSYKEY Target key name already exists." {
-				if config.Config.Advanced.RDBRestoreCommandBehavior == "skip" {
-					log.Warnf("redisWriter received BUSYKEY reply. argv=%v", e.Argv)
-				} else if config.Config.Advanced.RDBRestoreCommandBehavior == "panic" {
-					log.Panicf("redisWriter received BUSYKEY reply. argv=%v", e.Argv)
-				}
-			} else {
-				log.Panicf("redisWriter received error. error=[%v], argv=%v, slots=%v, reply=[%v]", err, e.Argv, e.Slots, reply)
-			}
-		}
-		if strings.EqualFold(e.CmdName, "select") { // skip select command
-			continue
-		}
-		atomic.AddUint64(&w.UpdateUnansweredBytesCount, ^(e.EncodedSize - 1))
-		statistics.UpdateAOFAppliedOffset(uint64(e.Offset))
-		statistics.UpdateUnansweredBytesCount(atomic.LoadUint64(&w.UpdateUnansweredBytesCount))
-	}
-	w.chWg.Done()
-}
-
-func (w *redisWriter) Close() {
-	close(w.chWaitReply)
-	w.chWg.Wait()
-}
diff --git a/internal/writer/redis_cluster.go b/internal/writer/redis_cluster_writer.go
similarity index 59%
rename from internal/writer/redis_cluster.go
rename to internal/writer/redis_cluster_writer.go
index de77a36a..145d1ad6 100644
--- a/internal/writer/redis_cluster.go
+++ b/internal/writer/redis_cluster_writer.go
@@ -1,34 +1,47 @@
 package writer
 
 import (
+	"RedisShake/internal/client"
+	"RedisShake/internal/entry"
+	"RedisShake/internal/log"
 	"fmt"
-	"github.com/alibaba/RedisShake/internal/client"
-	"github.com/alibaba/RedisShake/internal/entry"
-	"github.com/alibaba/RedisShake/internal/log"
 	"strconv"
 	"strings"
 )
 
 const KeySlots = 16384
 
+type RedisClusterWriterOptions struct {
+	Address  string `mapstructure:"address" default:""`
+	Username string `mapstructure:"username" default:""`
+	Password string `mapstructure:"password" default:""`
+	Tls      bool   `mapstructure:"tls" default:"false"`
+}
+
 type RedisClusterWriter struct {
 	addresses []string
 	writers   []Writer
 	router    [KeySlots]Writer
+
+	stat []interface{}
 }
 
-func NewRedisClusterWriter(address string, username string, password string, isTls bool) Writer {
+func NewRedisClusterWriter(opts *RedisClusterWriterOptions) Writer {
 	rw := new(RedisClusterWriter)
-
-	rw.loadClusterNodes(address, username, password, isTls)
-
+	rw.loadClusterNodes(opts)
 	log.Infof("redisClusterWriter connected to redis cluster successful. addresses=%v", rw.addresses)
 	return rw
 }
 
-func (r *RedisClusterWriter) loadClusterNodes(address string, username string, password string, isTls bool) {
-	client_ := client.NewRedisClient(address, username, password, isTls)
-	reply := client_.DoWithStringReply("cluster", "nodes")
+func (r *RedisClusterWriter) Close() {
+	for _, writer := range r.writers {
+		writer.Close()
+	}
+}
+
+func (r *RedisClusterWriter) loadClusterNodes(opts *RedisClusterWriterOptions) {
+	c := client.NewRedisClient(opts.Address, opts.Username, opts.Password, opts.Tls)
+	reply := c.DoWithStringReply("cluster", "nodes")
 	reply = strings.TrimSpace(reply)
 	for _, line := range strings.Split(reply, "\n") {
 		line = strings.TrimSpace(line)
@@ -54,8 +67,15 @@ func (r *RedisClusterWriter) loadClusterNodes(address string, username string, p
 		}
 
 		r.addresses = append(r.addresses, address)
+
 		// writers
-		redisWriter := NewRedisWriter(address, username, password, isTls)
+		opts := &RedisStandaloneWriterOptions{
+			Address:  address,
+			Username: opts.Username,
+			Password: opts.Password,
+			Tls:      opts.Tls,
+		}
+		redisWriter := NewRedisStandaloneWriter(opts)
 		r.writers = append(r.writers, redisWriter)
 		// parse slots
 		for i := 8; i < len(words); i++ {
@@ -66,16 +86,16 @@ func (r *RedisClusterWriter) loadClusterNodes(address string, username string, p
 				seg := strings.Split(words[i], "-")
 				start, err = strconv.Atoi(seg[0])
 				if err != nil {
-					log.PanicError(err)
+					log.Panicf(err.Error())
 				}
 				end, err = strconv.Atoi(seg[1])
 				if err != nil {
-					log.PanicError(err)
+					log.Panicf(err.Error())
 				}
 			} else {
 				start, err = strconv.Atoi(words[i])
 				if err != nil {
-					log.PanicError(err)
+					log.Panicf(err.Error())
 				}
 				end = start
 			}
@@ -114,8 +134,32 @@ func (r *RedisClusterWriter) Write(entry *entry.Entry) {
 	r.router[lastSlot].Write(entry)
 }
 
-func (r *RedisClusterWriter) Close() {
+func (r *RedisClusterWriter) Consistent() bool {
 	for _, writer := range r.writers {
-		writer.Close()
+		if !writer.StatusConsistent() {
+			return false
+		}
+	}
+	return true
+}
+
+func (r *RedisClusterWriter) Status() interface{} {
+	r.stat = make([]interface{}, 0)
+	for _, writer := range r.writers {
+		r.stat = append(r.stat, writer.Status())
+	}
+	return r.stat
+}
+
+func (r *RedisClusterWriter) StatusString() string {
+	return "[redis_cluster_writer] writing to redis cluster"
+}
+
+func (r *RedisClusterWriter) StatusConsistent() bool {
+	for _, writer := range r.writers {
+		if !writer.StatusConsistent() {
+			return false
+		}
 	}
+	return true
 }
diff --git a/internal/writer/redis_standalone_writer.go b/internal/writer/redis_standalone_writer.go
new file mode 100644
index 00000000..2c4ebe5b
--- /dev/null
+++ b/internal/writer/redis_standalone_writer.go
@@ -0,0 +1,119 @@
+package writer
+
+import (
+	"RedisShake/internal/client"
+	"RedisShake/internal/client/proto"
+	"RedisShake/internal/config"
+	"RedisShake/internal/entry"
+	"RedisShake/internal/log"
+	"fmt"
+	"strconv"
+	"strings"
+	"sync"
+	"sync/atomic"
+	"time"
+)
+
+type RedisStandaloneWriterOptions struct {
+	Address  string `mapstructure:"address" default:""`
+	Username string `mapstructure:"username" default:""`
+	Password string `mapstructure:"password" default:""`
+	Tls      bool   `mapstructure:"tls" default:"false"`
+}
+
+type redisStandaloneWriter struct {
+	address string
+	client  *client.Redis
+	DbId    int
+
+	chWaitReply chan *entry.Entry
+	chWg        sync.WaitGroup
+
+	stat struct {
+		Name              string `json:"name"`
+		UnansweredBytes   int64  `json:"unanswered_bytes"`
+		UnansweredEntries int64  `json:"unanswered_entries"`
+	}
+}
+
+func NewRedisStandaloneWriter(opts *RedisStandaloneWriterOptions) Writer {
+	rw := new(redisStandaloneWriter)
+	rw.address = opts.Address
+	rw.stat.Name = "writer_" + strings.Replace(opts.Address, ":", "_", -1)
+	rw.client = client.NewRedisClient(opts.Address, opts.Username, opts.Password, opts.Tls)
+	rw.chWaitReply = make(chan *entry.Entry, config.Opt.Advanced.PipelineCountLimit)
+	rw.chWg.Add(1)
+	go rw.processReply()
+	return rw
+}
+
+func (w *redisStandaloneWriter) Close() {
+	close(w.chWaitReply)
+	w.chWg.Wait()
+}
+
+func (w *redisStandaloneWriter) Write(e *entry.Entry) {
+	// switch db if we need
+	if w.DbId != e.DbId {
+		w.switchDbTo(e.DbId)
+	}
+
+	// send
+	bytes := e.Serialize()
+	for e.SerializedSize+atomic.LoadInt64(&w.stat.UnansweredBytes) > config.Opt.Advanced.TargetRedisClientMaxQuerybufLen {
+		time.Sleep(1 * time.Nanosecond)
+	}
+	log.Debugf("[%s] send cmd. cmd=[%s]", w.stat.Name, e.String())
+	w.chWaitReply <- e
+	atomic.AddInt64(&w.stat.UnansweredBytes, e.SerializedSize)
+	atomic.AddInt64(&w.stat.UnansweredEntries, 1)
+	w.client.SendBytes(bytes)
+}
+
+func (w *redisStandaloneWriter) switchDbTo(newDbId int) {
+	log.Debugf("[%s] switch db to [%d]", w.stat.Name, newDbId)
+	w.client.Send("select", strconv.Itoa(newDbId))
+	w.DbId = newDbId
+	w.chWaitReply <- &entry.Entry{
+		Argv:    []string{"select", strconv.Itoa(newDbId)},
+		CmdName: "select",
+	}
+}
+
+func (w *redisStandaloneWriter) processReply() {
+	for e := range w.chWaitReply {
+		reply, err := w.client.Receive()
+		log.Debugf("[%s] receive reply. reply=[%v], cmd=[%s]", w.stat.Name, reply, e.String())
+		if err == proto.Nil {
+			log.Warnf("[%s] receive nil reply. cmd=[%s]", w.stat.Name, e.String())
+		} else if err != nil {
+			if err.Error() == "BUSYKEY Target key name already exists." {
+				if config.Opt.Advanced.RDBRestoreCommandBehavior == "skip" {
+					log.Debugf("[%s] redisStandaloneWriter received BUSYKEY reply. cmd=[%s]", w.stat.Name, e.String())
+				} else if config.Opt.Advanced.RDBRestoreCommandBehavior == "panic" {
+					log.Panicf("[%s] redisStandaloneWriter received BUSYKEY reply. cmd=[%s]", w.stat.Name, e.String())
+				}
+			} else {
+				log.Panicf("[%s] receive reply failed. cmd=[%s], error=[%v]", w.stat.Name, e.String(), err)
+			}
+		}
+		if strings.EqualFold(e.CmdName, "select") { // skip select command
+			continue
+		}
+		atomic.AddInt64(&w.stat.UnansweredBytes, -e.SerializedSize)
+		atomic.AddInt64(&w.stat.UnansweredEntries, -1)
+	}
+	w.chWg.Done()
+}
+
+func (w *redisStandaloneWriter) Status() interface{} {
+	return w.stat
+}
+
+func (w *redisStandaloneWriter) StatusString() string {
+	return fmt.Sprintf("[%s]: unanswered_entries=%d", w.stat.Name, atomic.LoadInt64(&w.stat.UnansweredEntries))
+}
+
+func (w *redisStandaloneWriter) StatusConsistent() bool {
+	return atomic.LoadInt64(&w.stat.UnansweredBytes) == 0 && atomic.LoadInt64(&w.stat.UnansweredEntries) == 0
+}
diff --git a/restore.toml b/restore.toml
deleted file mode 100644
index 6ed1d1ae..00000000
--- a/restore.toml
+++ /dev/null
@@ -1,54 +0,0 @@
-type = "restore"
-
-[source]
-version = 5.0 # redis version, such as 2.8, 4.0, 5.0, 6.0, 6.2, 7.0, ...
-# Path to the dump.rdb file. Absolute path or relative path. Note
-# that relative paths are relative to the dir directory.
-rdb_file_path = "dump.rdb"
-
-[target]
-type = "standalone" # standalone or cluster
-# When the target is a cluster, write the address of one of the nodes.
-# redis-shake will obtain other nodes through the `cluster nodes` command.
-version = 5.0 # redis version, such as 2.8, 4.0, 5.0, 6.0, 6.2, 7.0, ...
-address = "127.0.0.1:6379"
-username = "" # keep empty if not using ACL
-password = "" # keep empty if no authentication is required
-tls = false
-
-[advanced]
-dir = "data"
-
-# runtime.GOMAXPROCS, 0 means use runtime.NumCPU() cpu cores
-ncpu = 3
-
-# pprof port, 0 means disable
-pprof_port = 0
-
-# metric port, 0 means disable
-metrics_port = 0
-
-# log
-log_file = "redis-shake.log"
-log_level = "info" # debug, info or warn
-log_interval = 5 # in seconds
-
-# redis-shake gets key and value from rdb file, and uses RESTORE command to
-# create the key in target redis. Redis RESTORE will return a "Target key name
-# is busy" error when key already exists. You can use this configuration item
-# to change the default behavior of restore:
-# panic:   redis-shake will stop when meet "Target key name is busy" error.
-# rewrite: redis-shake will replace the key with new value.
-# ignore:  redis-shake will skip restore the key when meet "Target key name is busy" error.
-rdb_restore_command_behavior = "rewrite" # panic, rewrite or skip
-
-# pipeline
-pipeline_count_limit = 1024
-
-# Client query buffers accumulate new commands. They are limited to a fixed
-# amount by default. This amount is normally 1gb.
-target_redis_client_max_querybuf_len = 1024_000_000
-
-# In the Redis protocol, bulk requests, that are, elements representing single
-# strings, are normally limited to 512 mb.
-target_redis_proto_max_bulk_len = 512_000_000
\ No newline at end of file
diff --git a/scan.toml b/scan.toml
deleted file mode 100644
index 25f61add..00000000
--- a/scan.toml
+++ /dev/null
@@ -1,55 +0,0 @@
-type = "scan"
-
-[source]
-version = 5.0 # redis version, such as 2.8, 4.0, 5.0, 6.0, 6.2, 7.0, ...
-address = "127.0.0.1:6379"
-username = "" # keep empty if not using ACL
-password = "" # keep empty if no authentication is required
-tls = false
-
-[target]
-type = "standalone" # "standalone" or "cluster"
-version = 5.0 # redis version, such as 2.8, 4.0, 5.0, 6.0, 6.2, 7.0, ...
-# When the target is a cluster, write the address of one of the nodes.
-# redis-shake will obtain other nodes through the `cluster nodes` command.
-address = "127.0.0.1:6380"
-username = "" # keep empty if not using ACL
-password = "" # keep empty if no authentication is required
-tls = false
-
-[advanced]
-dir = "data"
-
-# runtime.GOMAXPROCS, 0 means use runtime.NumCPU() cpu cores
-ncpu = 0
-
-# pprof port, 0 means disable
-pprof_port = 0
-
-# metric port, 0 means disable
-metrics_port = 0
-
-# log
-log_file = "redis-shake.log"
-log_level = "info" # debug, info or warn
-log_interval = 5 # in seconds
-
-# redis-shake gets key and value from rdb file, and uses RESTORE command to
-# create the key in target redis. Redis RESTORE will return a "Target key name
-# is busy" error when key already exists. You can use this configuration item
-# to change the default behavior of restore:
-# panic:   redis-shake will stop when meet "Target key name is busy" error.
-# rewrite: redis-shake will replace the key with new value.
-# ignore:  redis-shake will skip restore the key when meet "Target key name is busy" error.
-rdb_restore_command_behavior = "rewrite" # panic, rewrite or skip
-
-# pipeline
-pipeline_count_limit = 1024
-
-# Client query buffers accumulate new commands. They are limited to a fixed
-# amount by default. This amount is normally 1gb.
-target_redis_client_max_querybuf_len = 1024_000_000
-
-# In the Redis protocol, bulk requests, that are, elements representing single
-# strings, are normally limited to 512 mb.
-target_redis_proto_max_bulk_len = 512_000_000
\ No newline at end of file
diff --git a/scripts/cluster_helper/cluster_helper.py b/scripts/cluster_helper/cluster_helper.py
deleted file mode 100644
index 8a9a68ec..00000000
--- a/scripts/cluster_helper/cluster_helper.py
+++ /dev/null
@@ -1,185 +0,0 @@
-#!/usr/bin/env python3
-# encoding: utf-8
-import datetime
-import os
-import shutil
-import signal
-import sys
-import time
-from pathlib import Path
-
-import redis
-import requests
-import toml
-
-from launcher import Launcher
-
-USAGE = """
-cluster_helper is a helper script to start many redis-shake for syncing from cluster.
-
-Usage:
-   $ python3 cluster_helper.py ./bin/redis-shake sync.toml
-   or
-   $ python3 cluster_helper.py ./bin/redis-shake sync.toml ./bin/filters/key_prefix.lua
-"""
-
-REDIS_SHAKE_PATH = ""
-LUA_FILTER_PATH = ""
-SLEEP_SECONDS = 5
-stopped = False
-toml_template = {}
-
-
-class Shake:
-    def __init__(self):
-        self.metrics_port = 0
-        self.launcher = None
-
-
-nodes = {}
-
-
-def parse_args():
-    if len(sys.argv) != 3 and len(sys.argv) != 4:
-        print(USAGE)
-        exit(1)
-    global REDIS_SHAKE_PATH, LUA_FILTER_PATH, toml_template
-
-    # 1. check redis-shake path
-    REDIS_SHAKE_PATH = sys.argv[1]
-    if not Path(REDIS_SHAKE_PATH).is_file():
-        print(f"redis-shake path [{REDIS_SHAKE_PATH}] is not a file")
-        print(USAGE)
-        exit(1)
-    print(f"redis-shake path: {REDIS_SHAKE_PATH}")
-    REDIS_SHAKE_PATH = os.path.abspath(REDIS_SHAKE_PATH)
-    print(f"redis-shake abs path: {REDIS_SHAKE_PATH}")
-
-    # 2. check and load toml file
-    toml_template = toml.load(sys.argv[2])
-    print(toml_template)
-    if "username" not in toml_template["source"]:
-        toml_template["source"]["username"] = ""
-    if "password" not in toml_template["source"]:
-        toml_template["source"]["password"] = ""
-    if "tls" not in toml_template["source"]:
-        toml_template["source"]["tls"] = False
-    if "advanced" not in toml_template:
-        toml_template["advanced"] = {}
-
-    # 3. check filter
-    if len(sys.argv) == 4:
-        LUA_FILTER_PATH = sys.argv[3]
-        if not Path(LUA_FILTER_PATH).is_file():
-            print(f"filter path [{LUA_FILTER_PATH}] is not a file")
-            print(USAGE)
-            exit(1)
-        print(f"filter path: {LUA_FILTER_PATH}")
-        LUA_FILTER_PATH = os.path.abspath(LUA_FILTER_PATH)
-        print(f"filter abs path: {LUA_FILTER_PATH}")
-
-
-def stop():
-    for shake in nodes.values():
-        shake.launcher.stop()
-    exit(0)
-
-
-def loop():
-    while True:
-        if stopped:
-            stop()
-        print(
-            f"================ {datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')} ================"
-        )
-
-        metrics = []
-        for address, shake in nodes.items():
-            try:
-                ret = requests.get(f"http://localhost:{shake.metrics_port}").json()
-                metrics.append(ret)
-            except requests.exceptions.RequestException as e:
-                print(f"get metrics from [{address}] failed: {e}")
-
-        for metric in sorted(metrics, key=lambda x: x["address"]):
-            print(f"{metric['address']} {metric['msg']} ")
-
-        if len(metrics) == 0:
-            print("no redis-shake is running")
-            break
-
-        time.sleep(SLEEP_SECONDS)
-
-
-def main():
-    parse_args()
-
-    # parse args
-    address = toml_template["source"]["address"]
-    host, port = address.split(":")
-    username = toml_template["source"]["username"]
-    password = toml_template["source"]["password"]
-    tls = toml_template["source"]["tls"]
-    print(
-        f"host: {host}, port: {port}, username: {username}, password: {password}, tls: {tls}"
-    )
-    cluster = redis.RedisCluster(
-        host=host, port=port, username=username, password=password, ssl=tls
-    )
-    print("cluster nodes:", cluster.cluster_nodes())
-
-    # parse cluster nodes
-    for address, node in cluster.cluster_nodes().items():
-        if "master" in node["flags"]:
-            nodes[address] = Shake()
-    print(f"addresses:")
-    for k in nodes.keys():
-        print(k)
-
-    # create workdir and start redis-shake
-    if os.path.exists("data"):
-        shutil.rmtree("data")
-    os.mkdir("data")
-    os.chdir("data")
-    start_port = (
-        11007
-        if toml_template.get("advanced").get("metrics_port", 0) == 0
-        else toml_template["advanced"]["metrics_port"]
-    )
-    for address in nodes.keys():
-        workdir = address.replace(".", "_").replace(":", "_")
-
-        os.mkdir(workdir)
-        tmp_toml = toml_template
-        tmp_toml["source"]["address"] = address
-        start_port += 1
-        tmp_toml["advanced"]["metrics_port"] = start_port
-
-        with open(f"{workdir}/sync.toml", "w") as f:
-            toml.dump(tmp_toml, f)
-
-        # start redis-shake
-        args = [REDIS_SHAKE_PATH, f"sync.toml"]
-        if LUA_FILTER_PATH != "":
-            args.append(LUA_FILTER_PATH)
-        launcher = Launcher(args=args, work_dir=workdir)
-        nodes[address].launcher = launcher
-        nodes[address].metrics_port = start_port
-
-    signal.signal(signal.SIGINT, signal_handler)
-    print("start syncing...")
-    print("sleep 3 seconds to wait redis-shake start")
-    time.sleep(3)
-    loop()
-    for node in nodes.values():
-        node.launcher.stop()
-
-
-def signal_handler(sig, frame):
-    global stopped
-    print("\nYou pressed Ctrl+C!")
-    stopped = True
-
-
-if __name__ == "__main__":
-    main()
diff --git a/scripts/cluster_helper/launcher.py b/scripts/cluster_helper/launcher.py
deleted file mode 100644
index f1da8944..00000000
--- a/scripts/cluster_helper/launcher.py
+++ /dev/null
@@ -1,34 +0,0 @@
-import os
-import signal
-import subprocess
-from pathlib import Path
-
-
-class Launcher:
-    def __init__(self, args, work_dir):
-        self.started = True
-        self.args = args
-        self.work_dir = work_dir
-        if not os.path.exists(work_dir):
-            Path(self.work_dir).mkdir(parents=True, exist_ok=True)
-        self.stdout_file = open(work_dir + "/stdout", 'a')
-        self.stderr_file = open(work_dir + "/stderr", 'a')
-        self.process = subprocess.Popen(self.args, stdout=self.stdout_file,
-                                        stderr=self.stderr_file, cwd=self.work_dir,
-                                        encoding="utf-8")
-
-    def __del__(self):
-        assert not self.started, "Every Launcher should be closed manually! work_dir:" + self.work_dir
-
-    def get_pid(self):
-        return self.process.pid
-
-    def stop(self):
-        if self.started:
-            self.started = False
-            print(f"Waiting for process {self.process.pid} to exit...")
-            self.stdout_file.close()
-            self.stderr_file.close()
-            self.process.send_signal(signal.SIGINT)
-            self.process.wait()
-            print(f"process {self.process.pid} exited.")
diff --git a/scripts/cluster_helper/requirements.txt b/scripts/cluster_helper/requirements.txt
deleted file mode 100644
index 5cd405fc..00000000
--- a/scripts/cluster_helper/requirements.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-redis==4.3.4
-requests==2.27.1
-toml==0.10.2
diff --git a/test.sh b/test.sh
index c41811b6..3edc5908 100755
--- a/test.sh
+++ b/test.sh
@@ -1,7 +1,9 @@
 #!/bin/bash
 set -e
 
+# unit test
 go test ./... -v
 
-cd test
-python main.py
\ No newline at end of file
+# black box test
+cd tests/
+pybbt cases
\ No newline at end of file
diff --git a/test/assets/empty.toml b/test/assets/empty.toml
deleted file mode 100644
index 6ac5ea65..00000000
--- a/test/assets/empty.toml
+++ /dev/null
@@ -1,54 +0,0 @@
-type = "sync"
-
-[source]
-address = "127.0.0.1:6379"
-username = "" # keep empty if not using ACL
-password = "" # keep empty if no authentication is required
-tls = false
-elasticache_psync = "" # using when source is ElastiCache. ref: https://github.com/alibaba/RedisShake/issues/373
-
-[target]
-type = "cluster" # standalone or cluster
-# When the target is a cluster, write the address of one of the nodes.
-# redis-shake will obtain other nodes through the `cluster nodes` command.
-address = "127.0.0.1:30001"
-username = "" # keep empty if not using ACL
-password = "" # keep empty if no authentication is required
-tls = false
-
-[advanced]
-dir = "data"
-
-# runtime.GOMAXPROCS, 0 means use runtime.NumCPU() cpu cores
-ncpu = 3
-
-# pprof port, 0 means disable
-pprof_port = 0
-
-# metric port, 0 means disable
-metrics_port = 0
-
-# log
-log_file = "redis-shake.log"
-log_level = "info" # debug, info or warn
-log_interval = 5 # in seconds
-
-# redis-shake gets key and value from rdb file, and uses RESTORE command to
-# create the key in target redis. Redis RESTORE will return a "Target key name
-# is busy" error when key already exists. You can use this configuration item
-# to change the default behavior of restore:
-# panic:   redis-shake will stop when meet "Target key name is busy" error.
-# rewrite: redis-shake will replace the key with new value.
-# ignore:  redis-shake will skip restore the key when meet "Target key name is busy" error.
-rdb_restore_command_behavior = "rewrite" # panic, rewrite or skip
-
-# pipeline
-pipeline_count_limit = 1024
-
-# Client query buffers accumulate new commands. They are limited to a fixed
-# amount by default. This amount is normally 1gb.
-target_redis_client_max_querybuf_len = 1024_000_000
-
-# In the Redis protocol, bulk requests, that are, elements representing single
-# strings, are normally limited to 512 mb.
-target_redis_proto_max_bulk_len = 512_000_000
\ No newline at end of file
diff --git a/test/cases/auth.py b/test/cases/auth.py
deleted file mode 100644
index 1194b7f4..00000000
--- a/test/cases/auth.py
+++ /dev/null
@@ -1,27 +0,0 @@
-import time
-
-from utils import *
-
-
-def main():
-    r0 = Redis()
-    r0.client.config_set("requirepass", "password")
-    r0.client.execute_command("auth", "password")  # for Redis 4.0
-    r1 = Redis()
-    r1.client.config_set("requirepass", "password")
-    r1.client.execute_command("auth", "password")  # for Redis 4.0
-
-    t = get_empty_config()
-    t["source"]["address"] = r0.get_address()
-    t["source"]["password"] = "password"
-    t["target"]["type"] = "standalone"
-    t["target"]["address"] = r1.get_address()
-    t["target"]["password"] = "password"
-
-    rs = RedisShake()
-    rs.run(t)
-
-    # wait sync need use http interface
-    r0.client.set("finished", "1")
-    time.sleep(2)
-    assert r1.client.get("finished") == b"1"
diff --git a/test/cases/auth_acl.py b/test/cases/auth_acl.py
deleted file mode 100644
index 66438c75..00000000
--- a/test/cases/auth_acl.py
+++ /dev/null
@@ -1,35 +0,0 @@
-import time
-
-from utils import *
-
-
-def main():
-    r0 = Redis()
-    try:
-        r0.client.acl_list()
-    except Exception:
-        return
-    r0.client.execute_command("acl", "setuser", "user0", ">password0", "~*", "+@all")
-    r0.client.execute_command("acl", "setuser", "user0", "on")
-    r0.client.execute_command("auth", "user0", "password0")  # for Redis 4.0
-    r1 = Redis()
-    r1.client.execute_command("acl", "setuser", "user1", ">password1", "~*", "+@all")
-    r1.client.execute_command("acl", "setuser", "user1", "on")
-    r1.client.execute_command("auth", "user1", "password1")  # for Redis 4.0
-
-    t = get_empty_config()
-    t["source"]["address"] = r0.get_address()
-    t["source"]["username"] = "user0"
-    t["source"]["password"] = "password0"
-    t["target"]["type"] = "standalone"
-    t["target"]["address"] = r1.get_address()
-    t["target"]["username"] = "user1"
-    t["target"]["password"] = "password1"
-
-    rs = RedisShake()
-    rs.run(t)
-
-    # wait sync need use http interface
-    r0.client.set("finished", "1")
-    time.sleep(2)
-    assert r1.client.get("finished") == b"1"
diff --git a/test/cases/cluster/__init__.py b/test/cases/cluster/__init__.py
deleted file mode 100644
index e69de29b..00000000
diff --git a/test/cases/cluster/sync.py b/test/cases/cluster/sync.py
deleted file mode 100644
index 4bb57e5a..00000000
--- a/test/cases/cluster/sync.py
+++ /dev/null
@@ -1,5 +0,0 @@
-from utils import *
-
-
-def main():
-    pass
diff --git a/test/cases/example.py b/test/cases/example.py
deleted file mode 100644
index 8cf3afaa..00000000
--- a/test/cases/example.py
+++ /dev/null
@@ -1,9 +0,0 @@
-from utils import *
-
-
-def main():
-    assert True
-
-
-if __name__ == '__main__':
-    pass
diff --git a/test/cases/issues/__init__.py b/test/cases/issues/__init__.py
deleted file mode 100644
index e69de29b..00000000
diff --git a/test/cases/types/__init__.py b/test/cases/types/__init__.py
deleted file mode 100644
index e69de29b..00000000
diff --git a/test/cases/types/type_hash.py b/test/cases/types/type_hash.py
deleted file mode 100644
index a60f604a..00000000
--- a/test/cases/types/type_hash.py
+++ /dev/null
@@ -1,25 +0,0 @@
-import redis
-
-prefix = "hash"
-
-
-def add_rdb_data(c: redis.Redis):
-    c.hset(f"{prefix}_rdb_k", "key0", "value0")
-    for i in range(10000):
-        c.hset(f"{prefix}_rdb_k_large", f"key{i}", f"value{i}")
-
-
-def add_aof_data(c: redis.Redis):
-    c.hset(f"{prefix}_aof_k", "key0", "value0")
-    for i in range(10000):
-        c.hset(f"{prefix}_aof_k_large", f"key{i}", f"value{i}")
-
-
-def check_data(c: redis.Redis):
-    assert c.hget(f"{prefix}_rdb_k", "key0") == b"value0"
-    assert c.hmget(f"{prefix}_rdb_k_large", *[f"key{i}" for i in range(10000)]) == [f"value{i}".encode() for i in
-                                                                                    range(10000)]
-
-    assert c.hget(f"{prefix}_aof_k", "key0") == b"value0"
-    assert c.hmget(f"{prefix}_aof_k_large", *[f"key{i}" for i in range(10000)]) == [f"value{i}".encode() for i in
-                                                                                    range(10000)]
diff --git a/test/cases/types/type_list.py b/test/cases/types/type_list.py
deleted file mode 100644
index f823a958..00000000
--- a/test/cases/types/type_list.py
+++ /dev/null
@@ -1,23 +0,0 @@
-import redis
-
-prefix = "list"
-
-elements = [f"element_{i}" for i in range(10000)]
-
-
-def add_rdb_data(c: redis.Redis):
-    c.rpush(f"{prefix}_rdb_k", 0, 1, 2, 3, 4, 5, 6, 7)
-    c.rpush(f"{prefix}_rdb_k0", *elements)
-
-
-def add_aof_data(c: redis.Redis):
-    c.rpush(f"{prefix}_aof_k", 0, 1, 2, 3, 4, 5, 6, 7)
-    c.rpush(f"{prefix}_aof_k0", *elements)
-
-
-def check_data(c: redis.Redis):
-    assert c.lrange(f"{prefix}_rdb_k", 0, -1) == [b"0", b"1", b"2", b"3", b"4", b"5", b"6", b"7"]
-    assert c.lrange(f"{prefix}_rdb_k0", 0, -1) == [f"element_{i}".encode() for i in range(10000)]
-
-    assert c.lrange(f"{prefix}_aof_k", 0, -1) == [b"0", b"1", b"2", b"3", b"4", b"5", b"6", b"7"]
-    assert c.lrange(f"{prefix}_aof_k0", 0, -1) == [f"element_{i}".encode() for i in range(10000)]
diff --git a/test/cases/types/type_set.py b/test/cases/types/type_set.py
deleted file mode 100644
index 288d95ab..00000000
--- a/test/cases/types/type_set.py
+++ /dev/null
@@ -1,23 +0,0 @@
-import redis
-
-prefix = "set"
-
-
-def add_rdb_data(c: redis.Redis):
-    c.sadd(f"{prefix}_rdb_k", 0, 1, 2, 3, 4, 5, 6, 7)
-    elements = [f"element_{i}" for i in range(10000)]
-    c.sadd(f"{prefix}_rdb_k0", *elements)
-
-
-def add_aof_data(c: redis.Redis):
-    c.sadd(f"{prefix}_aof_k", 0, 1, 2, 3, 4, 5, 6, 7)
-    elements = [f"element_{i}" for i in range(10000)]
-    c.sadd(f"{prefix}_aof_k0", *elements)
-
-
-def check_data(c: redis.Redis):
-    assert c.smembers(f"{prefix}_rdb_k") == {b"0", b"1", b"2", b"3", b"4", b"5", b"6", b"7"}
-    assert c.smembers(f"{prefix}_rdb_k0") == {f"element_{i}".encode() for i in range(10000)}
-
-    assert c.smembers(f"{prefix}_aof_k") == {b"0", b"1", b"2", b"3", b"4", b"5", b"6", b"7"}
-    assert c.smembers(f"{prefix}_aof_k0") == {f"element_{i}".encode() for i in range(10000)}
diff --git a/test/cases/types/type_stream.py b/test/cases/types/type_stream.py
deleted file mode 100644
index d1f207e5..00000000
--- a/test/cases/types/type_stream.py
+++ /dev/null
@@ -1,34 +0,0 @@
-import redis
-
-prefix = "stream"
-
-fields = {f"field_{i}": f"value_{i}" for i in range(64)}
-STREAM_LENGTH = 128
-
-
-def add_rdb_data(c: redis.Redis):
-    c.xadd(f"{prefix}_rdb_k", {"key0": "value0"}, "*")
-    for i in range(STREAM_LENGTH):
-        c.xadd(f"{prefix}_rdb_k_large", fields=fields, id="*")
-    
-
-def add_aof_data(c: redis.Redis):
-    c.xadd(f"{prefix}_aof_k", {"key0": "value0"}, "*")
-    for i in range(STREAM_LENGTH):
-        c.xadd(f"{prefix}_aof_k_large", fields=fields, id="*")
-
-
-def check_data(c: redis.Redis):
-    ret = c.xread(streams={f"{prefix}_rdb_k": "0-0"}, count=1)[0][1]
-    assert ret[0][1] == {b"key0": b"value0"}
-
-    ret = c.xread(streams={f"{prefix}_rdb_k_large": "0-0"}, count=STREAM_LENGTH)[0][1]
-    for i in range(STREAM_LENGTH):
-        assert ret[i][1] == {k.encode(): v.encode() for k, v in fields.items()}
-
-    ret = c.xread(streams={f"{prefix}_aof_k": "0-0"}, count=1)[0][1]
-    assert ret[0][1] == {b"key0": b"value0"}
-
-    ret = c.xread(streams={f"{prefix}_aof_k_large": "0-0"}, count=STREAM_LENGTH)[0][1]
-    for i in range(STREAM_LENGTH):
-        assert ret[i][1] == {k.encode(): v.encode() for k, v in fields.items()}
diff --git a/test/cases/types/type_string.py b/test/cases/types/type_string.py
deleted file mode 100644
index c3c00b15..00000000
--- a/test/cases/types/type_string.py
+++ /dev/null
@@ -1,29 +0,0 @@
-import redis
-
-prefix = "string"
-
-
-def add_rdb_data(c: redis.Redis):
-    c.set(f"{prefix}_rdb_k", "v")
-    c.set(f"{prefix}_rdb_int", 0)
-    c.set(f"{prefix}_rdb_int0", -1)
-    c.set(f"{prefix}_rdb_int1", 123456789)
-
-
-def add_aof_data(c: redis.Redis):
-    c.set(f"{prefix}_aof_k", "v")
-    c.set(f"{prefix}_aof_int", 0)
-    c.set(f"{prefix}_aof_int0", -1)
-    c.set(f"{prefix}_aof_int1", 123456789)
-
-
-def check_data(c: redis.Redis):
-    assert c.get(f"{prefix}_rdb_k") == b"v"
-    assert c.get(f"{prefix}_rdb_int") == b'0'
-    assert c.get(f"{prefix}_rdb_int0") == b'-1'
-    assert c.get(f"{prefix}_rdb_int1") == b'123456789'
-
-    assert c.get(f"{prefix}_aof_k") == b"v"
-    assert c.get(f"{prefix}_aof_int") == b'0'
-    assert c.get(f"{prefix}_aof_int0") == b'-1'
-    assert c.get(f"{prefix}_aof_int1") == b'123456789'
diff --git a/test/cases/types/type_zset.py b/test/cases/types/type_zset.py
deleted file mode 100644
index 6fba0410..00000000
--- a/test/cases/types/type_zset.py
+++ /dev/null
@@ -1,27 +0,0 @@
-import redis
-
-prefix = "zset"
-float_maps = {"a": 1.1111, "b": 2.2222, "c": 3.3333}
-maps = {str(item): item for item in range(10000)}
-
-
-def add_rdb_data(c: redis.Redis):
-    c.zadd(f"{prefix}_rdb_k_float", float_maps)
-    c.zadd(f"{prefix}_rdb_k", maps)
-
-
-def add_aof_data(c: redis.Redis):
-    c.zadd(f"{prefix}_aof_k_float", float_maps)
-    c.zadd(f"{prefix}_aof_k", maps)
-
-
-def check_data(c: redis.Redis):
-    for k, v in c.zrange(f"{prefix}_rdb_k_float", 0, -1, withscores=True):
-        assert float_maps[k.decode()] == v
-    for k, v in c.zrange(f"{prefix}_rdb_k", 0, -1, withscores=True):
-        assert maps[k.decode()] == v
-
-    for k, v in c.zrange(f"{prefix}_aof_k_float", 0, -1, withscores=True):
-        assert float_maps[k.decode()] == v
-    for k, v in c.zrange(f"{prefix}_aof_k", 0, -1, withscores=True):
-        assert maps[k.decode()] == v
diff --git a/test/cases/types/types.py b/test/cases/types/types.py
deleted file mode 100644
index 743ce3c5..00000000
--- a/test/cases/types/types.py
+++ /dev/null
@@ -1,62 +0,0 @@
-import time
-
-import jury
-from utils import *
-
-from . import type_string, type_list, type_set, type_hash, type_zset, type_stream
-
-
-def main():
-    rs = RedisShake()
-    r0 = Redis()
-    r1 = Redis()
-    t = get_empty_config()
-    t["source"]["address"] = r0.get_address()
-    t["target"]["type"] = "standalone"
-    t["target"]["address"] = r1.get_address()
-
-    timer = jury.Timer()
-    type_string.add_rdb_data(r0.client)
-    type_list.add_rdb_data(r0.client)
-    type_set.add_rdb_data(r0.client)
-    type_hash.add_rdb_data(r0.client)
-    type_zset.add_rdb_data(r0.client)
-    type_stream.add_rdb_data(r0.client)
-    jury.log(f"add_rdb_data: {timer.elapsed_time()}s")
-
-    # run redis-shake
-    rs.run(t)
-    time.sleep(1)
-
-    timer = jury.Timer()
-    type_string.add_aof_data(r0.client)
-    type_list.add_aof_data(r0.client)
-    type_set.add_aof_data(r0.client)
-    type_hash.add_aof_data(r0.client)
-    type_zset.add_aof_data(r0.client)
-    type_stream.add_aof_data(r0.client)
-    jury.log(f"add_aof_data: {timer.elapsed_time()}s")
-
-    # wait sync need use http interface
-    timer = jury.Timer()
-    r0.client.set("finished", "1")
-    cnt = 0
-    while r1.client.get("finished") != b"1":
-        time.sleep(0.5)
-        cnt += 1
-        if cnt > 20:
-            raise Exception("sync timeout")
-    jury.log(f"sync time: {timer.elapsed_time()}s")
-
-    timer = jury.Timer()
-    type_string.check_data(r1.client)
-    type_list.check_data(r1.client)
-    type_set.check_data(r1.client)
-    type_hash.check_data(r1.client)
-    type_zset.check_data(r1.client)
-    type_stream.check_data(r1.client)
-    jury.log(f"check_data: {timer.elapsed_time()}s")
-
-
-if __name__ == '__main__':
-    main()
diff --git a/test/cases/types/types_rewrite.py b/test/cases/types/types_rewrite.py
deleted file mode 100644
index 8ffc8ec4..00000000
--- a/test/cases/types/types_rewrite.py
+++ /dev/null
@@ -1,63 +0,0 @@
-import time
-
-import jury
-from utils import *
-
-from . import type_string, type_list, type_set, type_hash, type_zset, type_stream
-
-
-def main():
-    rs = RedisShake()
-    r0 = Redis()
-    r1 = Redis()
-    t = get_empty_config()
-    t["advanced"]["target_redis_proto_max_bulk_len"] = 0
-    t["source"]["address"] = r0.get_address()
-    t["target"]["type"] = "standalone"
-    t["target"]["address"] = r1.get_address()
-
-    timer = jury.Timer()
-    type_string.add_rdb_data(r0.client)
-    type_list.add_rdb_data(r0.client)
-    type_set.add_rdb_data(r0.client)
-    type_hash.add_rdb_data(r0.client)
-    type_zset.add_rdb_data(r0.client)
-    type_stream.add_rdb_data(r0.client)
-    jury.log(f"add_rdb_data: {timer.elapsed_time()}s")
-
-    # run redis-shake
-    rs.run(t)
-    time.sleep(1)
-
-    timer = jury.Timer()
-    type_string.add_aof_data(r0.client)
-    type_list.add_aof_data(r0.client)
-    type_set.add_aof_data(r0.client)
-    type_hash.add_aof_data(r0.client)
-    type_zset.add_aof_data(r0.client)
-    type_stream.add_aof_data(r0.client)
-    jury.log(f"add_aof_data: {timer.elapsed_time()}s")
-
-    # wait sync need use http interface
-    timer = jury.Timer()
-    r0.client.set("finished", "1")
-    cnt = 0
-    while r1.client.get("finished") != b"1":
-        time.sleep(0.5)
-        cnt += 1
-        if cnt > 20:
-            raise Exception("sync timeout")
-    jury.log(f"sync time: {timer.elapsed_time()}s")
-
-    timer = jury.Timer()
-    type_string.check_data(r1.client)
-    type_list.check_data(r1.client)
-    type_set.check_data(r1.client)
-    type_hash.check_data(r1.client)
-    type_zset.check_data(r1.client)
-    type_stream.check_data(r1.client)
-    jury.log(f"check_data: {timer.elapsed_time()}s")
-
-
-if __name__ == '__main__':
-    main()
diff --git a/test/main.py b/test/main.py
deleted file mode 100644
index 95da2c8a..00000000
--- a/test/main.py
+++ /dev/null
@@ -1,19 +0,0 @@
-import jury
-
-cases = [
-    "cases/example",
-    "cases/types/types",
-    "cases/types/types_rewrite",
-    "cases/cluster/sync",
-    "cases/auth",
-    "cases/auth_acl",
-]
-
-
-def main():
-    j = jury.Jury(cases)
-    j.run()
-
-
-if __name__ == '__main__':
-    main()
diff --git a/test/requirements.txt b/test/requirements.txt
deleted file mode 100644
index c2b8943a..00000000
--- a/test/requirements.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-jury-test==0.0.3
-redis==4.3.3
-toml==0.10.2
diff --git a/test/utils/__init__.py b/test/utils/__init__.py
deleted file mode 100644
index 4eba8f97..00000000
--- a/test/utils/__init__.py
+++ /dev/null
@@ -1,3 +0,0 @@
-from .redis_ import Redis
-from .cluster_ import Cluster
-from .redis_shake import get_empty_config, RedisShake
diff --git a/test/utils/cluster_.py b/test/utils/cluster_.py
deleted file mode 100644
index 5b8a956e..00000000
--- a/test/utils/cluster_.py
+++ /dev/null
@@ -1,18 +0,0 @@
-import os
-
-from .redis_ import Redis
-import jury
-
-
-class Cluster:
-    def __init__(self, num=3):
-        self.nodes = []
-        self.num = num
-        for i in range(num):
-            self.nodes.append(Redis(args=["--cluster-enabled", "yes"]))
-        host_port_list = [f"{node.host}:{node.port}" for node in self.nodes]
-        jury.log_yellow(f"Redis cluster created, {self.num} nodes. {host_port_list}")
-        os.system("redis-cli --cluster-yes --cluster create " + " ".join(host_port_list))
-
-    def push_table(self):
-        pass
diff --git a/test/utils/constant.py b/test/utils/constant.py
deleted file mode 100644
index 9598674b..00000000
--- a/test/utils/constant.py
+++ /dev/null
@@ -1,6 +0,0 @@
-from pathlib import Path
-
-BASE_PATH = f"{Path(__file__).parent.parent.parent.absolute()}"  # project path
-
-PATH_REDIS_SHAKE = f"{BASE_PATH}/bin/redis-shake"
-PATH_EMPTY_CONFIG_FILE = f"{BASE_PATH}/test/assets/empty.toml"
diff --git a/test/utils/redis_.py b/test/utils/redis_.py
deleted file mode 100644
index 2ac5ed92..00000000
--- a/test/utils/redis_.py
+++ /dev/null
@@ -1,42 +0,0 @@
-import time
-
-import jury
-import redis
-
-
-class Redis:
-    def __init__(self, args=None):
-        self.args = args
-        if args is None:
-            self.args = []
-
-        self.redis = None
-        self.host = "127.0.0.1"
-        self.port = jury.get_free_port()
-        self.dir = f"{jury.get_case_dir()}/redis_{self.port}"
-        self.server = jury.Launcher(args=["redis-server", "--port", str(self.port)] + self.args, work_dir=self.dir)
-        self.__wait_start()
-        jury.log_yellow(f"Redis started(pid={self.server.get_pid()}). redis-cli -p {self.port}")
-
-    def get_address(self):
-        return f"127.0.0.1:{self.port}"
-
-    def __wait_start(self, timeout=5):
-        timer = jury.Timer()
-        while True:
-            try:
-                self.__create_client()
-                self.client.ping()
-                break
-            except redis.exceptions.ConnectionError:
-                time.sleep(0.01)
-            except redis.exceptions.ResponseError as e:
-                if str(e) == "LOADING Redis is loading the dataset in memory":
-                    time.sleep(0.01)
-                else:
-                    raise e
-            if timer.elapsed_time() > timeout:
-                raise Exception(f"tair start timeout, {self.dir}")
-
-    def __create_client(self):
-        self.client = redis.Redis(port=self.port, single_connection_client=True)
diff --git a/test/utils/redis_shake.py b/test/utils/redis_shake.py
deleted file mode 100644
index 5d7a581c..00000000
--- a/test/utils/redis_shake.py
+++ /dev/null
@@ -1,26 +0,0 @@
-import os
-from pathlib import Path
-
-import jury
-import toml
-
-from .constant import PATH_REDIS_SHAKE, PATH_EMPTY_CONFIG_FILE
-
-
-def get_empty_config():
-    with open(PATH_EMPTY_CONFIG_FILE, "r") as f:
-        return toml.load(f)
-
-
-class RedisShake:
-    def __init__(self):
-        self.server = None
-        self.redis = None
-        self.dir = f"{jury.get_case_dir()}/redis_shake"
-        if not os.path.exists(self.dir):
-            Path(self.dir).mkdir(parents=True, exist_ok=True)
-
-    def run(self, toml_config):
-        with open(f"{self.dir}/redis-shake.toml", "w") as f:
-            toml.dump(toml_config, f)
-        self.server = jury.Launcher(args=[PATH_REDIS_SHAKE, "redis-shake.toml"], work_dir=self.dir)
diff --git a/test/.gitignore b/tests/.gitignore
similarity index 100%
rename from test/.gitignore
rename to tests/.gitignore
diff --git a/tests/cases/auth_acl.py b/tests/cases/auth_acl.py
new file mode 100644
index 00000000..61e26ccf
--- /dev/null
+++ b/tests/cases/auth_acl.py
@@ -0,0 +1,50 @@
+import pybbt as p
+
+import helpers as h
+
+
+@p.subcase()
+def acl():
+    src = h.Redis()
+    dst = h.Redis()
+
+    src.client.execute_command("acl", "setuser", "user0", ">password0", "~*", "+@all")
+    src.client.execute_command("acl", "setuser", "user0", "on")
+    src.client.execute_command("auth", "user0", "password0")  # for Redis 4.0
+
+    dst.client.execute_command("acl", "setuser", "user1", ">password1", "~*", "+@all")
+    dst.client.execute_command("acl", "setuser", "user1", "on")
+    dst.client.execute_command("auth", "user1", "password1")  # for Redis 4.0
+
+    inserter = h.DataInserter()
+    inserter.add_data(src, cross_slots_cmd=True)
+
+    opts = h.ShakeOpts.create_sync_opts(src, dst)
+    opts["SyncStandaloneReader"]["username"] = "user0"
+    opts["SyncStandaloneReader"]["password"] = "password0"
+    opts["SyncStandaloneWriter"]["username"] = "user1"
+    opts["SyncStandaloneWriter"]["password"] = "password1"
+    p.log(f"opts: {opts}")
+    shake = h.Shake(opts)
+    print(shake.dir)
+
+    # wait sync done
+    p.ASSERT_TRUE_TIMEOUT(lambda: shake.is_consistent())
+    p.log(shake.get_status())
+
+    # check data
+    inserter.check_data(src, cross_slots_cmd=True)
+    inserter.check_data(dst, cross_slots_cmd=True)
+    p.ASSERT_EQ(src.dbsize(), dst.dbsize())
+
+
+@p.case(tags=["acl"])
+def main():
+    if h.REDIS_SERVER_VERSION < 6.0:
+        return
+
+    acl()
+
+
+if __name__ == '__main__':
+    main()
diff --git a/tests/cases/rdb.py b/tests/cases/rdb.py
new file mode 100644
index 00000000..e020b939
--- /dev/null
+++ b/tests/cases/rdb.py
@@ -0,0 +1,45 @@
+import pybbt as p
+
+import helpers as h
+
+
+def test(src, dst):
+    cross_slots_cmd = not (src.is_cluster() or dst.is_cluster())
+    inserter = h.DataInserter()
+    inserter.add_data(src, cross_slots_cmd=cross_slots_cmd)
+    p.ASSERT_TRUE(src.do("save"))
+
+    opts = h.ShakeOpts.create_rdb_opts(f"{src.dir}/dump.rdb", dst)
+    p.log(f"opts: {opts}")
+    h.Shake.run_once(opts)
+
+    # check data
+    inserter.check_data(src, cross_slots_cmd=cross_slots_cmd)
+    inserter.check_data(dst, cross_slots_cmd=cross_slots_cmd)
+    p.ASSERT_EQ(src.dbsize(), dst.dbsize())
+
+
+@p.subcase()
+def rdb_to_standalone():
+    src = h.Redis()
+    dst = h.Redis()
+    test(src, dst)
+
+
+@p.subcase()
+def rdb_to_cluster():
+    if h.REDIS_SERVER_VERSION < 3.0:
+        return
+    src = h.Redis()
+    dst = h.Cluster()
+    test(src, dst)
+
+
+@p.case(tags=["sync"])
+def main():
+    rdb_to_standalone()
+    rdb_to_cluster()
+
+
+if __name__ == '__main__':
+    main()
diff --git a/tests/cases/scan.py b/tests/cases/scan.py
new file mode 100644
index 00000000..1023c703
--- /dev/null
+++ b/tests/cases/scan.py
@@ -0,0 +1,68 @@
+import pybbt as p
+
+import helpers as h
+
+
+def test(src, dst):
+    cross_slots_cmd = not (src.is_cluster() or dst.is_cluster())
+    inserter = h.DataInserter()
+    inserter.add_data(src, cross_slots_cmd=cross_slots_cmd)
+    p.ASSERT_TRUE(src.do("save"))
+    inserter.add_data(src, cross_slots_cmd=cross_slots_cmd)  # add data again
+
+    opts = h.ShakeOpts.create_scan_opts(src, dst)
+    p.log(f"opts: {opts}")
+
+    # run shake
+    h.Shake.run_once(opts)
+
+    # check data
+    inserter.check_data(src, cross_slots_cmd=cross_slots_cmd)
+    inserter.check_data(dst, cross_slots_cmd=cross_slots_cmd)
+    p.ASSERT_EQ(src.dbsize(), dst.dbsize())
+
+
+@p.subcase()
+def standalone_to_standalone():
+    src = h.Redis()
+    dst = h.Redis()
+    test(src, dst)
+
+
+@p.subcase()
+def standalone_to_cluster():
+    if h.REDIS_SERVER_VERSION < 3.0:
+        return
+    src = h.Redis()
+    dst = h.Cluster()
+    test(src, dst)
+
+
+@p.subcase()
+def cluster_to_standalone():
+    if h.REDIS_SERVER_VERSION < 3.0:
+        return
+    src = h.Cluster()
+    dst = h.Redis()
+    test(src, dst)
+
+
+@p.subcase()
+def cluster_to_cluster():
+    if h.REDIS_SERVER_VERSION < 3.0:
+        return
+    src = h.Cluster()
+    dst = h.Cluster()
+    test(src, dst)
+
+
+@p.case(tags=["scan"])
+def main():
+    standalone_to_standalone()
+    standalone_to_cluster()
+    cluster_to_standalone()
+    cluster_to_cluster()
+
+
+if __name__ == '__main__':
+    main()
diff --git a/tests/cases/sync.py b/tests/cases/sync.py
new file mode 100644
index 00000000..dfd4f41f
--- /dev/null
+++ b/tests/cases/sync.py
@@ -0,0 +1,76 @@
+import pybbt as p
+
+import helpers as h
+
+
+def test(src, dst):
+    cross_slots_cmd = not (src.is_cluster() or dst.is_cluster())
+    inserter = h.DataInserter()
+    inserter.add_data(src, cross_slots_cmd=cross_slots_cmd)
+
+    p.ASSERT_TRUE(src.do("save"))
+
+    opts = h.ShakeOpts.create_sync_opts(src, dst)
+    p.log(f"opts: {opts}")
+    shake = h.Shake(opts)
+
+    # wait sync done
+    p.ASSERT_TRUE_TIMEOUT(lambda: shake.is_consistent(), timeout=10)
+
+    # add data again
+    inserter.add_data(src, cross_slots_cmd=cross_slots_cmd)
+
+    # wait sync done
+    p.ASSERT_TRUE_TIMEOUT(lambda: shake.is_consistent())
+    p.log(shake.get_status())
+
+    # check data
+    inserter.check_data(src, cross_slots_cmd=cross_slots_cmd)
+    inserter.check_data(dst, cross_slots_cmd=cross_slots_cmd)
+    p.ASSERT_EQ(src.dbsize(), dst.dbsize())
+
+
+@p.subcase()
+def standalone_to_standalone():
+    src = h.Redis()
+    dst = h.Redis()
+    test(src, dst)
+
+
+@p.subcase()
+def standalone_to_cluster():
+    if h.REDIS_SERVER_VERSION < 3.0:
+        return
+    src = h.Redis()
+    dst = h.Cluster()
+    test(src, dst)
+
+
+@p.subcase()
+def cluster_to_standalone():
+    if h.REDIS_SERVER_VERSION < 3.0:
+        return
+    src = h.Cluster()
+    dst = h.Redis()
+    test(src, dst)
+
+
+@p.subcase()
+def cluster_to_cluster():
+    if h.REDIS_SERVER_VERSION < 3.0:
+        return
+    src = h.Cluster()
+    dst = h.Cluster()
+    test(src, dst)
+
+
+@p.case(tags=["sync"])
+def main():
+    standalone_to_standalone()
+    standalone_to_cluster()
+    cluster_to_standalone()
+    cluster_to_cluster()
+
+
+if __name__ == '__main__':
+    main()
diff --git a/tests/helpers/__init__.py b/tests/helpers/__init__.py
new file mode 100644
index 00000000..01eae554
--- /dev/null
+++ b/tests/helpers/__init__.py
@@ -0,0 +1,5 @@
+from .cluster import Cluster
+from .constant import REDIS_SERVER_VERSION
+from .data_inserter import DataInserter
+from .redis import Redis
+from .shake import Shake, ShakeOpts
diff --git a/tests/helpers/cluster.py b/tests/helpers/cluster.py
new file mode 100644
index 00000000..a9b85608
--- /dev/null
+++ b/tests/helpers/cluster.py
@@ -0,0 +1,47 @@
+import pybbt as p
+import redis
+from redis.cluster import ClusterNode
+
+from helpers.redis import Redis
+
+
+class Cluster:
+    def __init__(self):
+        self.num = 2
+        self.nodes = []
+        for i in range(self.num):
+            self.nodes.append(Redis(args=["--cluster-enabled", "yes"]))
+        p.ASSERT_EQ(self.nodes[0].do("cluster", "addslots", *range(0, 8192)), b"OK")
+        p.ASSERT_EQ(self.nodes[1].do("cluster", "addslots", *range(8192, 16384)), b"OK")
+        p.ASSERT_EQ(self.nodes[0].do("cluster", "meet", self.nodes[1].host, self.nodes[1].port), b"OK")
+        p.ASSERT_EQ(self.nodes[1].do("cluster", "meet", self.nodes[0].host, self.nodes[0].port), b"OK")
+        self.client = redis.RedisCluster(startup_nodes=[
+            ClusterNode(self.nodes[0].host, self.nodes[0].port),
+            ClusterNode(self.nodes[1].host, self.nodes[1].port)
+        ], require_full_coverage=True)
+        p.ASSERT_EQ_TIMEOUT(lambda: self.client.cluster_info()["cluster_state"], "ok", 10)
+        p.log(f"cluster started at {self.nodes[0].get_address()}")
+        p.log(self.client.cluster_nodes())
+
+    def do(self, *args):
+        try:
+            ret = self.client.execute_command(*args)
+        except redis.exceptions.ResponseError as e:
+            return f"-{str(e)}"
+        return ret
+
+    def pipeline(self):
+        return self.client.pipeline(transaction=False)
+
+    def get_address(self):
+        return self.nodes[0].get_address()
+
+    def dbsize(self):
+        size = 0
+        for node in self.nodes:
+            size += node.dbsize()
+        return size
+
+    @staticmethod
+    def is_cluster():
+        return True
diff --git a/tests/helpers/commands/__init__.py b/tests/helpers/commands/__init__.py
new file mode 100644
index 00000000..a1027747
--- /dev/null
+++ b/tests/helpers/commands/__init__.py
@@ -0,0 +1,2 @@
+from .select import SelectChecker
+from .string import StringChecker
diff --git a/tests/helpers/commands/checker.py b/tests/helpers/commands/checker.py
new file mode 100644
index 00000000..756d306b
--- /dev/null
+++ b/tests/helpers/commands/checker.py
@@ -0,0 +1,9 @@
+from helpers.redis import Redis
+
+
+class Checker:
+    def add_data(self, r: Redis, cross_slots_cmd: bool):
+        ...
+
+    def check_data(self, r: Redis, cross_slots_cmd: bool):
+        ...
diff --git a/tests/helpers/commands/list.py b/tests/helpers/commands/list.py
new file mode 100644
index 00000000..de4d0c80
--- /dev/null
+++ b/tests/helpers/commands/list.py
@@ -0,0 +1,31 @@
+import pybbt
+
+from helpers.commands.checker import Checker
+from helpers.redis import Redis
+
+
+class ListChecker(Checker):
+    PREFIX = "list"
+
+    def __init__(self):
+        self.cnt = 0
+
+    def add_data(self, r: Redis, cross_slots_cmd: bool):
+        p = r.pipeline()
+        p.lpush(f"{self.PREFIX}_{self.cnt}_list", 0)
+        p.lpush(f"{self.PREFIX}_{self.cnt}_list", 1)
+        p.lpush(f"{self.PREFIX}_{self.cnt}_list", 2)
+        p.lpush(f"{self.PREFIX}_{self.cnt}_list_str", "string0")
+        p.lpush(f"{self.PREFIX}_{self.cnt}_list_str", "string1")
+        p.lpush(f"{self.PREFIX}_{self.cnt}_list_str", "string2")
+        ret = p.execute()
+        pybbt.ASSERT_EQ(ret, [1, 2, 3, 1, 2, 3])
+        self.cnt += 1
+
+    def check_data(self, r: Redis, cross_slots_cmd: bool):
+        for i in range(self.cnt):
+            p = r.pipeline()
+            p.lrange(f"{self.PREFIX}_{i}_list", 0, -1)
+            p.lrange(f"{self.PREFIX}_{i}_list_str", 0, -1)
+            ret = p.execute()
+            pybbt.ASSERT_EQ(ret, [[b"2", b"1", b"0"], [b"string2", b"string1", b"string0"]])
diff --git a/tests/helpers/commands/select.py b/tests/helpers/commands/select.py
new file mode 100644
index 00000000..c39c3716
--- /dev/null
+++ b/tests/helpers/commands/select.py
@@ -0,0 +1,41 @@
+import pybbt
+
+from helpers.commands.checker import Checker
+from helpers.redis import Redis
+
+
+class SelectChecker(Checker):
+    PREFIX = "select"
+
+    def __init__(self):
+        self.cnt = 0
+
+    def add_data(self, r: Redis, cross_slots_cmd: bool):
+        if not cross_slots_cmd:
+            return
+        p = r.pipeline()
+        p.select(1)
+        p.set(f"{self.PREFIX}_{self.cnt}_db1", "db1")
+        p.select(2)
+        p.set(f"{self.PREFIX}_{self.cnt}_db2", "db2")
+        p.select(3)
+        p.set(f"{self.PREFIX}_{self.cnt}_db3", "db3")
+        p.select(0)
+        ret = p.execute()
+        pybbt.ASSERT_EQ(ret, [True, True, True, True, True, True, True])
+        self.cnt += 1
+
+    def check_data(self, r: Redis, cross_slots_cmd: bool):
+        if not cross_slots_cmd:
+            return
+        for i in range(self.cnt):
+            p = r.pipeline()
+            p.select(1)
+            p.get(f"{self.PREFIX}_{i}_db1")
+            p.select(2)
+            p.get(f"{self.PREFIX}_{i}_db2")
+            p.select(3)
+            p.get(f"{self.PREFIX}_{i}_db3")
+            p.select(0)
+            ret = p.execute()
+            pybbt.ASSERT_EQ(ret, [True, b'db1', True, b'db2', True, b'db3', True])
diff --git a/tests/helpers/commands/string.py b/tests/helpers/commands/string.py
new file mode 100644
index 00000000..0e5f0395
--- /dev/null
+++ b/tests/helpers/commands/string.py
@@ -0,0 +1,31 @@
+import pybbt
+
+from helpers.commands.checker import Checker
+from helpers.redis import Redis
+
+
+class StringChecker(Checker):
+    PREFIX = "string"
+
+    def __init__(self):
+        self.cnt = 0
+
+    def add_data(self, r: Redis, cross_slots_cmd: bool):
+        p = r.pipeline()
+        p.set(f"{self.PREFIX}_{self.cnt}_str", "string")
+        p.set(f"{self.PREFIX}_{self.cnt}_int", 0)
+        p.set(f"{self.PREFIX}_{self.cnt}_int0", -1)
+        p.set(f"{self.PREFIX}_{self.cnt}_int1", 123456789)
+        ret = p.execute()
+        pybbt.ASSERT_EQ(ret, [True, True, True, True])
+        self.cnt += 1
+
+    def check_data(self, r: Redis, cross_slots_cmd: bool):
+        for i in range(self.cnt):
+            p = r.pipeline()
+            p.get(f"{self.PREFIX}_{i}_str")
+            p.get(f"{self.PREFIX}_{i}_int")
+            p.get(f"{self.PREFIX}_{i}_int0")
+            p.get(f"{self.PREFIX}_{i}_int1")
+            ret = p.execute()
+            pybbt.ASSERT_EQ(ret, [b"string", b"0", b"-1", b"123456789"])
diff --git a/tests/helpers/constant.py b/tests/helpers/constant.py
new file mode 100644
index 00000000..46f957aa
--- /dev/null
+++ b/tests/helpers/constant.py
@@ -0,0 +1,17 @@
+import shutil
+import subprocess
+from pathlib import Path
+
+BASE_PATH = f"{Path(__file__).parent.parent.parent.absolute()}"  # project path
+
+PATH_REDIS_SHAKE = f"{BASE_PATH}/bin/redis-shake"
+PATH_REDIS_SERVER = shutil.which('redis-server')
+output = subprocess.check_output(f"{PATH_REDIS_SERVER} --version", shell=True)
+output_str = output.decode("utf-8")
+REDIS_SERVER_VERSION = float(output_str.split("=")[1].split(" ")[0][:3])
+
+if __name__ == '__main__':
+    print(BASE_PATH)
+    print(PATH_REDIS_SHAKE)
+    print(PATH_REDIS_SERVER)
+    print(REDIS_SERVER_VERSION)
diff --git a/tests/helpers/data_inserter.py b/tests/helpers/data_inserter.py
new file mode 100644
index 00000000..d513205f
--- /dev/null
+++ b/tests/helpers/data_inserter.py
@@ -0,0 +1,18 @@
+from helpers.commands import SelectChecker, StringChecker
+from helpers.redis import Redis
+
+
+class DataInserter:
+    def __init__(self, ):
+        self.checkers = [
+            StringChecker(),
+            SelectChecker(),
+        ]
+
+    def add_data(self, r: Redis, cross_slots_cmd: bool):
+        for checker in self.checkers:
+            checker.add_data(r, cross_slots_cmd)
+
+    def check_data(self, r: Redis, cross_slots_cmd: bool):
+        for checker in self.checkers:
+            checker.check_data(r, cross_slots_cmd)
diff --git a/tests/helpers/redis.py b/tests/helpers/redis.py
new file mode 100644
index 00000000..e88469f4
--- /dev/null
+++ b/tests/helpers/redis.py
@@ -0,0 +1,53 @@
+import pybbt
+import redis
+
+from helpers.constant import PATH_REDIS_SERVER
+from helpers.utils.network import get_free_port
+from helpers.utils.timer import Timer
+
+
+class Redis:
+    def __init__(self, args=None):
+        self.case_ctx = pybbt.get_case_context()
+        if args is None:
+            args = []
+        self.host = "127.0.0.1"
+        self.port = get_free_port()
+        self.dir = f"{self.case_ctx.dir}/redis_{self.port}"
+        args.extend(["--port", str(self.port)])
+        self.server = pybbt.Launcher(args=[PATH_REDIS_SERVER] + args, work_dir=self.dir)
+        self._wait_start()
+        self.client = redis.Redis(host=self.host, port=self.port)
+        self.case_ctx.add_exit_hook(lambda: self.server.stop())
+        pybbt.log_yellow(f"redis server started at {self.host}:{self.port}, redis-cli -p {self.port}")
+
+    def _wait_start(self, timeout=5):
+        timer = Timer()
+        while True:
+            try:
+                r = redis.Redis(host=self.host, port=self.port)
+                r.ping()
+                return
+            except redis.exceptions.ConnectionError:
+                pass
+            if timer.elapsed() > timeout:
+                raise TimeoutError("redis server not started")
+
+    def do(self, *args):
+        try:
+            ret = self.client.execute_command(*args)
+        except redis.exceptions.ResponseError as e:
+            return f"-{str(e)}"
+        return ret
+
+    def pipeline(self):
+        return self.client.pipeline(transaction=False)
+
+    def get_address(self):
+        return f"{self.host}:{self.port}"
+
+    def is_cluster(self):
+        return self.client.info()["cluster_enabled"]
+
+    def dbsize(self):
+        return self.client.dbsize()
diff --git a/tests/helpers/shake.py b/tests/helpers/shake.py
new file mode 100644
index 00000000..2d02a79e
--- /dev/null
+++ b/tests/helpers/shake.py
@@ -0,0 +1,105 @@
+import time
+import typing
+
+import pybbt
+import requests
+import toml
+
+from helpers.constant import PATH_REDIS_SHAKE
+from helpers.redis import Redis
+from helpers.utils.filesystem import create_empty_dir
+from helpers.utils.network import get_free_port
+from helpers.utils.timer import Timer
+
+
+# [SyncClusterReader]
+# address = "127.0.0.1:6379"
+# username = "" # keep empty if not using ACL
+# password = "" # keep empty if no authentication is required
+# tls = false
+#
+# [RedisClusterWriter]
+# address = "127.0.0.1:6380"
+# username = "" # keep empty if not using ACL
+# password = "" # keep empty if no authentication is required
+# tls = false
+
+class ShakeOpts:
+    @staticmethod
+    def create_sync_opts(src: Redis, dst: Redis) -> typing.Dict:
+        d = {}
+        if src.is_cluster():
+            d["SyncClusterReader"] = {"address": src.get_address()}
+        else:
+            d["SyncStandaloneReader"] = {"address": src.get_address()}
+        if dst.is_cluster():
+            d["RedisClusterWriter"] = {"address": dst.get_address()}
+        else:
+            d["RedisStandaloneWriter"] = {"address": dst.get_address()}
+        return d
+
+    @staticmethod
+    def create_scan_opts(src: Redis, dst: Redis) -> typing.Dict:
+        d = {}
+        if src.is_cluster():
+            d["ScanClusterReader"] = {"address": src.get_address()}
+        else:
+            d["ScanStandaloneReader"] = {"address": src.get_address()}
+        if dst.is_cluster():
+            d["RedisClusterWriter"] = {"address": dst.get_address()}
+        else:
+            d["RedisStandaloneWriter"] = {"address": dst.get_address()}
+        return d
+
+    @staticmethod
+    def create_rdb_opts(rdb_path: str, dts: Redis) -> typing.Dict:
+        d = {"RdbReader": {"filepath": rdb_path}}
+        if dts.is_cluster():
+            d["RedisClusterWriter"] = {"address": dts.get_address()}
+        else:
+            d["RedisStandaloneWriter"] = {"address": dts.get_address()}
+        return d
+
+
+class Shake:
+    def __init__(self, opts: typing.Dict):
+        self.case_ctx = pybbt.get_case_context()
+        self.status_port = get_free_port()
+        self.status_url = f"http://localhost:{self.status_port}"
+        opts["advanced"] = {"status_port": self.status_port, "log_level": "debug"}
+
+        self.dir = f"{self.case_ctx.dir}/shake{self.status_port}"
+        create_empty_dir(self.dir)
+        with open(f"{self.dir}/shake.toml", "w") as f:
+            toml.dump(opts, f)
+        self.server = pybbt.Launcher(args=[PATH_REDIS_SHAKE, "shake.toml"], work_dir=self.dir)
+        self.case_ctx.add_exit_hook(lambda: self.server.stop())
+        self._wait_start()
+
+    @staticmethod
+    def run_once(opts: typing.Dict):
+        status_port = get_free_port()
+        run_dir = f"{pybbt.get_case_context().dir}/shake{status_port}"
+        create_empty_dir(run_dir)
+        with open(f"{run_dir}/shake.toml", "w") as f:
+            toml.dump(opts, f)
+        server = pybbt.Launcher(args=[PATH_REDIS_SHAKE, "shake.toml"], work_dir=run_dir)
+        server.wait_stop()
+
+    def get_status(self):
+        ret = requests.get(self.status_url)
+        return ret.json()
+
+    def _wait_start(self, timeout=5):
+        timer = Timer()
+        while True:
+            try:
+                self.get_status()
+                return
+            except requests.exceptions.ConnectionError:
+                pass
+            if timer.elapsed() > timeout:
+                raise Exception(f"Shake server not started in {timeout} seconds")
+
+    def is_consistent(self):
+        return self.get_status()["consistent"]
diff --git a/test/cases/__init__.py b/tests/helpers/utils/__init__.py
similarity index 100%
rename from test/cases/__init__.py
rename to tests/helpers/utils/__init__.py
diff --git a/tests/helpers/utils/filesystem.py b/tests/helpers/utils/filesystem.py
new file mode 100644
index 00000000..ba6067de
--- /dev/null
+++ b/tests/helpers/utils/filesystem.py
@@ -0,0 +1,25 @@
+import os
+import shutil
+
+
+def file_size(file):
+    return os.stat(file).st_size
+
+
+def file_truncate(file, size):
+    with open(file, "rb+") as f:
+        content = f.read()
+        f.truncate(size)
+        return content[size:]
+
+
+def file_append(file, content):
+    with open(file, "ab") as f:
+        f.write(content)
+
+
+def create_empty_dir(path):
+    if os.path.exists(path):
+        shutil.rmtree(path)
+    os.makedirs(path)
+
diff --git a/tests/helpers/utils/network.py b/tests/helpers/utils/network.py
new file mode 100644
index 00000000..0193f806
--- /dev/null
+++ b/tests/helpers/utils/network.py
@@ -0,0 +1,45 @@
+import random
+import socket
+import threading
+
+
+def is_port_available(port: int) -> bool:
+    with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
+        try:
+            s.bind(('localhost', port))
+            s.close()
+            return True
+        except OSError:
+            return False
+
+
+MIN_PORT = 30000
+MAX_PORT = 40000
+
+port_cursor = random.choice(range(MIN_PORT, MAX_PORT, 1000))
+
+g_lock = threading.Lock()
+
+
+def get_free_port():
+    global port_cursor
+    global g_lock
+    with g_lock:
+        while True:
+            port_cursor += 1
+            if port_cursor == MAX_PORT:
+                port_cursor = MIN_PORT
+
+            if is_port_available(port_cursor):
+                return port_cursor
+
+
+__all__ = [
+    "is_port_available",
+    "get_free_port",
+]
+
+if __name__ == '__main__':
+    # test
+    for i in range(10):
+        print(get_free_port())
diff --git a/tests/helpers/utils/rand.py b/tests/helpers/utils/rand.py
new file mode 100644
index 00000000..4d598cfe
--- /dev/null
+++ b/tests/helpers/utils/rand.py
@@ -0,0 +1,8 @@
+import random
+import string
+
+
+def random_string(length=8) -> str:
+    chars = string.ascii_letters + string.digits
+    random_str = ''.join(random.choices(chars, k=length))
+    return random_str
diff --git a/tests/helpers/utils/timer.py b/tests/helpers/utils/timer.py
new file mode 100644
index 00000000..4cfc5ed2
--- /dev/null
+++ b/tests/helpers/utils/timer.py
@@ -0,0 +1,9 @@
+import time
+
+
+class Timer:
+    def __init__(self):
+        self.start_time = time.perf_counter()
+
+    def elapsed(self):
+        return time.perf_counter() - self.start_time
diff --git a/tests/requirements.txt b/tests/requirements.txt
new file mode 100644
index 00000000..e58a91a5
--- /dev/null
+++ b/tests/requirements.txt
@@ -0,0 +1,3 @@
+requests>=2.31.0
+toml>=0.10.2
+pybbt>=1.0.1