Remove PostgreSQL and RabbitMQ Dependencies

Simplifying the deployment by using only Redis as the Queue and result
store. We don't require the advanced features of RabbitMQ and PostgreSQL
for our use case.

Signed-off-by: Colin Wilk <[email protected]>

compose.yml

@@ -1,28 +1,26 @@
 ---
 version: '3'
 services:
-  rabbitmq:
-    image: rabbitmq:3-management
-    hostname: my-rabbit
-    environment:
-      - RABBITMQ_DEFAULT_USER=user
-      - RABBITMQ_DEFAULT_PASS=password
-    ports:
-      - "5672:5672"
-      - "15672:15672"
-    restart: unless-stopped
-
-  postgres:
-    image: postgres:latest
-    environment:
-      POSTGRES_USER: fio
-      POSTGRES_PASSWORD: password
-      POSTGRES_DB: fio
-    ports:
-      - "5432:5432"
 
+  # We are setting up redis with appendfsync set to always here. This ensures
+  # maximum data durability at the cost of performance.
+  # If you require high performance you might consider setting this to everysec
+  # instead which syncs to disk every second.
   redis:
     image: redis:latest
+    command: redis-server --appendonly yes --appendfsync always
+    volumes:
+      - redis_data:/data
     ports:
       - "6379:6379"
-    restart: unless-stopped
+    restart: always
+    healthcheck:
+      test: ["CMD", "redis-cli", "ping"]
+      interval: 30s
+      timeout: 10s
+      retries: 5
+      start_period: 30s
+
+volumes:
+  redis_data:
+    driver: local