docker-compose.yml

version: '3.9'
name: rinha-backend

services:
  one: # API - Instância 01
    build: .
    hostname: one
    pid: host
    environment:
      DSN: "postgres://light:fasterthanusual@db:5432/rinha?sslmode=disable"
      PORT: 8080
      REDIS_ADDRESS: "cache:6379"
    depends_on:
      db:
        condition: service_healthy
      cache:
        condition: service_started
#    ulimits:
#      nofile:
#        soft: 100000
#        hard: 100000
    deploy:
      resources:
        limits:
          cpus: '0.25'
          memory: '0.1GiB'
    networks:
      - default

  two: # API - Instância 02
    build: .
    hostname: two
    pid: host
    environment:
      DSN: "postgres://light:fasterthanusual@db:5432/rinha?sslmode=disable"
      PORT: 8080
      REDIS_ADDRESS: "cache:6379"
    depends_on:
      db:
        condition: service_healthy
      one:
        condition: service_started
      cache:
        condition: service_started
#    ulimits:
#      nofile:
#        soft: 100000
#        hard: 100000
    deploy:
      resources:
        limits:
          cpus: '0.25'
          memory: '0.1GB'
    networks:
      - default

  nginx: # Load Balancer
    image: nginx:latest
    volumes:
      - ./nginx.conf:/etc/nginx/nginx.conf:ro
    depends_on:
      - one
      - two
    ports:
      - "9999:9999"
    deploy:
      resources:
        limits:
          cpus: '0.25'
          memory: '0.25GB'
    networks:
      - default

  db: # Banco de dados
    image: postgres
    command: postgres -c 'max_connections=600'
    environment:
      - POSTGRES_PASSWORD=fasterthanusual
      - POSTGRES_USER=light
      - POSTGRES_DB=rinha
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U light -d rinha"]
      interval: 5s
      timeout: 5s
      retries: 5
    ports:
        - "5432:5432"
    deploy:
      resources:
        limits:
          cpus: '0.5'
          memory: '0.5GB'
    networks:
      - default

  cache:
    image: redis
    ports:
      - "6379:6379"
    deploy:
      resources:
        limits:
          cpus: '0.25'
          memory: '0.25GB'
    networks:
      - default

networks:
  default: