MongoDB, PostgreSQL ও Redis Docker-এ

services:
  mongodb:
    image: mongo:7
    restart: unless-stopped
    ports:
      - "27017:27017"
    environment:
      - MONGO_INITDB_ROOT_USERNAME=admin
      - MONGO_INITDB_ROOT_PASSWORD=secret
    volumes:
      - mongo-data:/data/db

volumes:
  mongo-data:

const URI = process.env.MONGODB_URI
  // container-এ: mongodb://admin:secret@mongodb:27017/blog?authSource=admin

await mongoose.connect(URI, {
  serverSelectionTimeoutMS: 5000,
});

services:
  postgres:
    image: postgres:16-alpine
    restart: unless-stopped
    ports:
      - "5432:5432"
    environment:
      - POSTGRES_USER=app
      - POSTGRES_PASSWORD=pass
      - POSTGRES_DB=mydb
    volumes:
      - pg-data:/var/lib/postgresql/data

volumes:
  pg-data:

import pg from "pg";

const client = new pg.Client({
  connectionString: process.env.DATABASE_URL,
  // postgres://app:pass@postgres:5432/mydb
});

services:
  redis:
    image: redis:7-alpine
    restart: unless-stopped
    ports:
      - "6379:6379"
    # password দিতে চাইলে:
    command: ["redis-server", "--requirepass", "secret"]
    volumes:
      - redis-data:/data

volumes:
  redis-data:

import Redis from "ioredis";

const redis = new Redis({
  host: process.env.REDIS_HOST || "redis",
  port: Number(process.env.REDIS_PORT) || 6379,
  password: process.env.REDIS_PASSWORD,
});

services:
  postgres:
    image: postgres:16-alpine
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U app -d mydb"]
      interval: 5s
      timeout: 3s
      retries: 10