diff --git a/c#/crawler/appsettings.json b/c#/crawler/appsettings.json
index 5da07137..b5834f8d 100644
--- a/c#/crawler/appsettings.json
+++ b/c#/crawler/appsettings.json
@@ -1,6 +1,6 @@
 {
     "ConnectionStrings": { // ConnectionStrings.* is able to hot reload
-        "Main": "Server=localhost;User=;Password=;Database="
+        "Main": "Host=localhost;Username=;Password=;Database=;Search Path="
     },
     "DbSettings": { // DbSettings.* is able to hot reload
         "LogLevel": "Warning",
diff --git a/c#/crawler/packages.lock.json b/c#/crawler/packages.lock.json
index caa44917..53ea37df 100644
--- a/c#/crawler/packages.lock.json
+++ b/c#/crawler/packages.lock.json
@@ -45,13 +45,13 @@
           "linq2db": "5.4.0"
         }
       },
-      "linq2db.MySqlConnector": {
+      "linq2db.PostgreSQL": {
         "type": "Direct",
         "requested": "[5.4.1, )",
         "resolved": "5.4.1",
-        "contentHash": "2COG7ZuoEBl5N4pODkaW5pKn27ELfnCYXr0Ei0b2I1PWvKm1HG4IPK4Z2yNf1ZLunGCRLq4xfqGjue8kuAC9jw==",
+        "contentHash": "UCZrvZJKkBw2I8Q28QCNlj3T0h1ck8wPdgHv+R8c21BJiMasBwuy81IIbC3ntz51lN8AH9o6Te6oePD/p7FkMQ==",
         "dependencies": {
-          "MySqlConnector": "2.2.7",
+          "Npgsql": "7.0.6",
           "linq2db": "5.4.1"
         }
       },
@@ -505,14 +505,6 @@
         "resolved": "17.9.28",
         "contentHash": "hNfIadilgBXbAOmV7LCdPSmLsUILA3QZhR4Wu9VbFDaHjtU3dCFRfJMbk45galt1pfffz4yI5qT9oUJl+F8mNQ=="
       },
-      "MySqlConnector": {
-        "type": "Transitive",
-        "resolved": "2.3.5",
-        "contentHash": "AmEfUPkFl+Ev6jJ8Dhns3CYHBfD12RHzGYWuLt6DfG6/af6YvOMyPz74ZPPjBYQGRJkumD2Z48Kqm8s5DJuhLA==",
-        "dependencies": {
-          "Microsoft.Extensions.Logging.Abstractions": "7.0.1"
-        }
-      },
       "NLog": {
         "type": "Transitive",
         "resolved": "5.2.8",
@@ -528,13 +520,23 @@
           "NLog": "5.2.8"
         }
       },
-      "Pomelo.EntityFrameworkCore.MySql": {
+      "Npgsql": {
         "type": "Transitive",
         "resolved": "8.0.2",
-        "contentHash": "XjnlcxVBLnEMbyEc5cZzgZeDyLvAniACZQ04W1slWN0f4rmfNzl98gEMvHnFH0fMDF06z9MmgGi/Sr7hJ+BVnw==",
+        "contentHash": "MuJzLoWCaQhQAR3oh66YR0Ir6mxuezncGX3f8wxvAc21g0+9HICktJQlqMoODhxztZKXE5k9GxRxqUAN+vPb4g==",
         "dependencies": {
-          "Microsoft.EntityFrameworkCore.Relational": "[8.0.2, 8.0.999]",
-          "MySqlConnector": "2.3.5"
+          "Microsoft.Extensions.Logging.Abstractions": "8.0.0"
+        }
+      },
+      "Npgsql.EntityFrameworkCore.PostgreSQL": {
+        "type": "Transitive",
+        "resolved": "8.0.2",
+        "contentHash": "eoZPynwkZTWFTgnocvXORuCL2yFZtscrUdqVhjxiRULpC7BMg9zhLM5oDZAU5PoX1PgN77hmkKE4a3PQiHqh7Q==",
+        "dependencies": {
+          "Microsoft.EntityFrameworkCore": "8.0.2",
+          "Microsoft.EntityFrameworkCore.Abstractions": "8.0.2",
+          "Microsoft.EntityFrameworkCore.Relational": "8.0.2",
+          "Npgsql": "8.0.2"
         }
       },
       "Roslynator.Analyzers": {
@@ -611,7 +613,7 @@
           "Microsoft.Extensions.Hosting": "[8.0.0, )",
           "Microsoft.VisualStudio.Threading.Analyzers": "[17.9.28, )",
           "NLog.Extensions.Logging": "[5.3.8, )",
-          "Pomelo.EntityFrameworkCore.MySql": "[8.0.2, )",
+          "Npgsql.EntityFrameworkCore.PostgreSQL": "[8.0.2, )",
           "Roslynator.Analyzers": "[4.12.2, )",
           "SharpSource": "[1.24.0, )",
           "SonarAnalyzer.CSharp": "[9.24.0.89429, )",
diff --git a/c#/crawler/tbm.Crawler.csproj b/c#/crawler/tbm.Crawler.csproj
index d1494b02..7adf4aa8 100644
--- a/c#/crawler/tbm.Crawler.csproj
+++ b/c#/crawler/tbm.Crawler.csproj
@@ -12,7 +12,7 @@
         <PackageReference Include="FlexLabs.EntityFrameworkCore.Upsert" Version="8.0.0" />
         <PackageReference Include="Humanizer.Core.zh-Hans" Version="2.14.1" />
         <PackageReference Include="linq2db.EntityFrameworkCore" Version="8.1.0" />
-        <PackageReference Include="linq2db.MySqlConnector" Version="5.4.1" />
+        <PackageReference Include="linq2db.PostgreSQL" Version="5.4.1" />
         <PackageReference Include="LinqKit.Microsoft.EntityFrameworkCore" Version="8.1.5" />
         <PackageReference Include="Microsoft.Extensions.Http" Version="8.0.0" />
         <PackageReference Include="NSonic" Version="1.3.3" />
diff --git a/c#/imagePipeline/appsettings.json b/c#/imagePipeline/appsettings.json
index 78ba0af5..dcdbc371 100644
--- a/c#/imagePipeline/appsettings.json
+++ b/c#/imagePipeline/appsettings.json
@@ -1,6 +1,6 @@
 {
     "ConnectionStrings": { // ConnectionStrings.* is able to hot reload
-        "Main": "Server=localhost;User=;Password=;Database="
+        "Main": "Host=localhost;Username=;Password=;Database=;Search Path="
     },
     "DbSettings": { // DbSettings.* is able to hot reload
         "LogLevel": "Warning",
diff --git a/c#/imagePipeline/packages.lock.json b/c#/imagePipeline/packages.lock.json
index 2ed71222..39785369 100644
--- a/c#/imagePipeline/packages.lock.json
+++ b/c#/imagePipeline/packages.lock.json
@@ -31,6 +31,16 @@
           "Polly.Extensions.Http": "3.0.0"
         }
       },
+      "Npgsql.EntityFrameworkCore.PostgreSQL.NetTopologySuite": {
+        "type": "Direct",
+        "requested": "[8.0.2, )",
+        "resolved": "8.0.2",
+        "contentHash": "NO4EXEsa0iRHUmHGss7U1fpAUKJ0yz9RIG284NZFOfqysm9GgrFM59OKdzjLc1br1EILv78DLL/uj0BD0fcPVw==",
+        "dependencies": {
+          "Npgsql.EntityFrameworkCore.PostgreSQL": "8.0.2",
+          "Npgsql.NetTopologySuite": "8.0.2"
+        }
+      },
       "OpenCvSharp4": {
         "type": "Direct",
         "requested": "[4.9.0.20240103, )",
@@ -47,19 +57,6 @@
         "resolved": "4.9.0.20240103",
         "contentHash": "PkV3ge6rE//gj0OlG4TRXzmcLVDoKsJx0lYN1ogx9gZhqUPHlzrnWqKk2hAFK+nU8T0chRhrwHL0U2hSMyoCWw=="
       },
-      "Pomelo.EntityFrameworkCore.MySql.NetTopologySuite": {
-        "type": "Direct",
-        "requested": "[8.0.2, )",
-        "resolved": "8.0.2",
-        "contentHash": "6vAobua5xjI8b5eybHgRtnkoNYS1rlHe9qlmnbgCkdXAkbIaf80aKP3PQSFIghwcfTKBm5PJ6d7fuD91ArEo0A==",
-        "dependencies": {
-          "Microsoft.EntityFrameworkCore.Relational": "[8.0.2, 8.0.999]",
-          "Microsoft.Extensions.DependencyInjection": "8.0.0",
-          "MySqlConnector": "2.3.5",
-          "NetTopologySuite": "2.5.0",
-          "Pomelo.EntityFrameworkCore.MySql": "8.0.2"
-        }
-      },
       "Sdcb.PaddleInference.runtime.win64.mkl": {
         "type": "Direct",
         "requested": "[2.5.1, )",
@@ -543,14 +540,6 @@
         "resolved": "17.9.28",
         "contentHash": "hNfIadilgBXbAOmV7LCdPSmLsUILA3QZhR4Wu9VbFDaHjtU3dCFRfJMbk45galt1pfffz4yI5qT9oUJl+F8mNQ=="
       },
-      "MySqlConnector": {
-        "type": "Transitive",
-        "resolved": "2.3.5",
-        "contentHash": "AmEfUPkFl+Ev6jJ8Dhns3CYHBfD12RHzGYWuLt6DfG6/af6YvOMyPz74ZPPjBYQGRJkumD2Z48Kqm8s5DJuhLA==",
-        "dependencies": {
-          "Microsoft.Extensions.Logging.Abstractions": "7.0.1"
-        }
-      },
       "NetTopologySuite": {
         "type": "Transitive",
         "resolved": "2.5.0",
@@ -559,6 +548,14 @@
           "System.Memory": "4.5.4"
         }
       },
+      "NetTopologySuite.IO.PostGis": {
+        "type": "Transitive",
+        "resolved": "2.1.0",
+        "contentHash": "3W8XTFz8iP6GQ5jDXK1/LANHiU+988k1kmmuPWNKcJLpmSg6CvFpbTpz+s4+LBzkAp64wHGOldSlkSuzYfrIKA==",
+        "dependencies": {
+          "NetTopologySuite": "[2.0.0, 3.0.0-A)"
+        }
+      },
       "NLog": {
         "type": "Transitive",
         "resolved": "5.2.8",
@@ -574,6 +571,35 @@
           "NLog": "5.2.8"
         }
       },
+      "Npgsql": {
+        "type": "Transitive",
+        "resolved": "8.0.2",
+        "contentHash": "MuJzLoWCaQhQAR3oh66YR0Ir6mxuezncGX3f8wxvAc21g0+9HICktJQlqMoODhxztZKXE5k9GxRxqUAN+vPb4g==",
+        "dependencies": {
+          "Microsoft.Extensions.Logging.Abstractions": "8.0.0"
+        }
+      },
+      "Npgsql.EntityFrameworkCore.PostgreSQL": {
+        "type": "Transitive",
+        "resolved": "8.0.2",
+        "contentHash": "eoZPynwkZTWFTgnocvXORuCL2yFZtscrUdqVhjxiRULpC7BMg9zhLM5oDZAU5PoX1PgN77hmkKE4a3PQiHqh7Q==",
+        "dependencies": {
+          "Microsoft.EntityFrameworkCore": "8.0.2",
+          "Microsoft.EntityFrameworkCore.Abstractions": "8.0.2",
+          "Microsoft.EntityFrameworkCore.Relational": "8.0.2",
+          "Npgsql": "8.0.2"
+        }
+      },
+      "Npgsql.NetTopologySuite": {
+        "type": "Transitive",
+        "resolved": "8.0.2",
+        "contentHash": "FQtqjMyZM9/V480rehWMah+KYqeBfCtk77n+pShPFZ2M+DSE+vn5tjpKZX02/oeTbWeExPBVya2idMttB0d7oQ==",
+        "dependencies": {
+          "NetTopologySuite": "2.5.0",
+          "NetTopologySuite.IO.PostGIS": "2.1.0",
+          "Npgsql": "8.0.2"
+        }
+      },
       "Polly": {
         "type": "Transitive",
         "resolved": "7.2.4",
@@ -587,15 +613,6 @@
           "Polly": "7.1.0"
         }
       },
-      "Pomelo.EntityFrameworkCore.MySql": {
-        "type": "Transitive",
-        "resolved": "8.0.2",
-        "contentHash": "XjnlcxVBLnEMbyEc5cZzgZeDyLvAniACZQ04W1slWN0f4rmfNzl98gEMvHnFH0fMDF06z9MmgGi/Sr7hJ+BVnw==",
-        "dependencies": {
-          "Microsoft.EntityFrameworkCore.Relational": "[8.0.2, 8.0.999]",
-          "MySqlConnector": "2.3.5"
-        }
-      },
       "Roslynator.Analyzers": {
         "type": "Transitive",
         "resolved": "4.12.2",
@@ -944,7 +961,7 @@
           "Microsoft.Extensions.Hosting": "[8.0.0, )",
           "Microsoft.VisualStudio.Threading.Analyzers": "[17.9.28, )",
           "NLog.Extensions.Logging": "[5.3.8, )",
-          "Pomelo.EntityFrameworkCore.MySql": "[8.0.2, )",
+          "Npgsql.EntityFrameworkCore.PostgreSQL": "[8.0.2, )",
           "Roslynator.Analyzers": "[4.12.2, )",
           "SharpSource": "[1.24.0, )",
           "SonarAnalyzer.CSharp": "[9.24.0.89429, )",
diff --git a/c#/imagePipeline/tbm.ImagePipeline.csproj b/c#/imagePipeline/tbm.ImagePipeline.csproj
index 11b6064f..ea1c54ac 100644
--- a/c#/imagePipeline/tbm.ImagePipeline.csproj
+++ b/c#/imagePipeline/tbm.ImagePipeline.csproj
@@ -8,9 +8,9 @@
     <ItemGroup>
         <PackageReference Include="LanguageExt.Core" Version="4.4.8" />
         <PackageReference Include="Microsoft.Extensions.Http.Polly" Version="8.0.4" />
+        <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL.NetTopologySuite" Version="8.0.2" />
         <PackageReference Include="OpenCvSharp4" Version="4.9.0.20240103" />
         <PackageReference Include="OpenCvSharp4.runtime.win" Version="4.9.0.20240103" />
-        <PackageReference Include="Pomelo.EntityFrameworkCore.MySql.NetTopologySuite" Version="8.0.2" />
         <PackageReference Include="Sdcb.PaddleInference.runtime.win64.mkl" Version="2.5.1" />
         <PackageReference Include="Sdcb.PaddleOCR" Version="2.7.0.1" />
         <PackageReference Include="Sdcb.PaddleOCR.Models.Online" Version="2.7.0.1" />
diff --git a/c#/shared/packages.lock.json b/c#/shared/packages.lock.json
index 9140dc48..dcf484ea 100644
--- a/c#/shared/packages.lock.json
+++ b/c#/shared/packages.lock.json
@@ -127,14 +127,16 @@
           "NLog": "5.2.8"
         }
       },
-      "Pomelo.EntityFrameworkCore.MySql": {
+      "Npgsql.EntityFrameworkCore.PostgreSQL": {
         "type": "Direct",
         "requested": "[8.0.2, )",
         "resolved": "8.0.2",
-        "contentHash": "XjnlcxVBLnEMbyEc5cZzgZeDyLvAniACZQ04W1slWN0f4rmfNzl98gEMvHnFH0fMDF06z9MmgGi/Sr7hJ+BVnw==",
+        "contentHash": "eoZPynwkZTWFTgnocvXORuCL2yFZtscrUdqVhjxiRULpC7BMg9zhLM5oDZAU5PoX1PgN77hmkKE4a3PQiHqh7Q==",
         "dependencies": {
-          "Microsoft.EntityFrameworkCore.Relational": "[8.0.2, 8.0.999]",
-          "MySqlConnector": "2.3.5"
+          "Microsoft.EntityFrameworkCore": "8.0.2",
+          "Microsoft.EntityFrameworkCore.Abstractions": "8.0.2",
+          "Microsoft.EntityFrameworkCore.Relational": "8.0.2",
+          "Npgsql": "8.0.2"
         }
       },
       "Roslynator.Analyzers": {
@@ -459,19 +461,19 @@
         "resolved": "8.0.0",
         "contentHash": "bXJEZrW9ny8vjMF1JV253WeLhpEVzFo1lyaZu1vQ4ZxWUlVvknZ/+ftFgVheLubb4eZPSwwxBeqS1JkCOjxd8g=="
       },
-      "MySqlConnector": {
-        "type": "Transitive",
-        "resolved": "2.3.5",
-        "contentHash": "AmEfUPkFl+Ev6jJ8Dhns3CYHBfD12RHzGYWuLt6DfG6/af6YvOMyPz74ZPPjBYQGRJkumD2Z48Kqm8s5DJuhLA==",
-        "dependencies": {
-          "Microsoft.Extensions.Logging.Abstractions": "7.0.1"
-        }
-      },
       "NLog": {
         "type": "Transitive",
         "resolved": "5.2.8",
         "contentHash": "jAIELkWBs1CXFPp986KSGpDFQZHCFccO+LMbKBTTNm42KifaI1mYzFMFQQfuGmGMTrCx0TFPhDjHDE4cLAZWiQ=="
       },
+      "Npgsql": {
+        "type": "Transitive",
+        "resolved": "8.0.2",
+        "contentHash": "MuJzLoWCaQhQAR3oh66YR0Ir6mxuezncGX3f8wxvAc21g0+9HICktJQlqMoODhxztZKXE5k9GxRxqUAN+vPb4g==",
+        "dependencies": {
+          "Microsoft.Extensions.Logging.Abstractions": "8.0.0"
+        }
+      },
       "System.Diagnostics.DiagnosticSource": {
         "type": "Transitive",
         "resolved": "8.0.0",
diff --git a/c#/shared/tbm.Shared.csproj b/c#/shared/tbm.Shared.csproj
index fe1f0087..26c79fda 100644
--- a/c#/shared/tbm.Shared.csproj
+++ b/c#/shared/tbm.Shared.csproj
@@ -7,7 +7,7 @@
         <PackageReference Include="Microsoft.EntityFrameworkCore" Version="8.0.4" />
         <PackageReference Include="Microsoft.Extensions.Hosting" Version="8.0.0" />
         <PackageReference Include="NLog.Extensions.Logging" Version="5.3.8" />
-        <PackageReference Include="Pomelo.EntityFrameworkCore.MySql" Version="8.0.2" />
+        <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="8.0.2" />
         <PackageReference Include="SuperLinq" Version="6.0.0" />
     </ItemGroup>
     <Choose>