docker-compose.yml

services:
  load-balancer:
    image: nginx
    container_name: nginx-load-balancer
    volumes:
      - ./nginx.conf:/etc/nginx/nginx.conf:ro
    ports:
      - "80:80"
    depends_on:
      - edge-server-1
      - edge-server-2
      - edge-server-3
    deploy:
      resources:
        limits:
          cpus: "2"           # Limit to 1 CPU core
          memory: "1G"      # Limit to 512 MB of memory
        reservations:
          cpus: "1"         # Reserve 0.5 CPU core
          memory: "1G"      # Reserve 256 MB of memory

  edge-server-1:
    image: nginx
    container_name: edge-server-1
    volumes:
      - ./edge-nginx.conf:/etc/nginx/nginx.conf:ro
    ports:
      - "3001:80"
    networks:
      - cdn-network
    deploy:
      resources:
        limits:
          cpus: "2"
          memory: "2G"
        reservations:
          cpus: "1"
          memory: "1G"

  edge-server-2:
    image: nginx
    container_name: edge-server-2
    volumes:
      - ./edge-nginx.conf:/etc/nginx/nginx.conf:ro
    ports:
      - "3002:80"
    networks:
      - cdn-network
    deploy:
      resources:
        limits:
          cpus: "2"
          memory: "2G"
        reservations:
          cpus: "1"
          memory: "1G"

  edge-server-3:
    image: nginx
    container_name: edge-server-3
    volumes:
      - ./edge-nginx.conf:/etc/nginx/nginx.conf:ro
    ports:
      - "3003:80"
    networks:
      - cdn-network
    deploy:
      resources:
        limits:
          cpus: "2"
          memory: "2G"
        reservations:
          cpus: "1"
          memory: "1G"

  backend-server:
    image: node:20  # Use Node.js image
    container_name: backend-server
    working_dir: /usr/src/app
    volumes:
      - .:/usr/src/app  # Mount current directory to /usr/src/app inside the container
      - ./public:/usr/src/app/public  # Mount the 'public' directory for static files
    command: ["npx", "nodemon", "index.js"]  # Run with nodemon using npx
    ports:
      - "8080:8080"
    networks:
      - cdn-network
    deploy:
      resources:
        limits:
          cpus: "2"
          memory: "2G"
        reservations:
          cpus: "1"
          memory: "1G"

networks:
  cdn-network:
    driver: bridge