version: '3.8'

services:
  # Load balancer
  nginx-lb:
    image: nginx:alpine
    ports:
      - "80:80"
      - "443:443"
    volumes:
      - ./nginx-lb.conf:/etc/nginx/nginx.conf
      - ./ssl:/etc/nginx/ssl
    depends_on:
      - big-pickle
    deploy:
      resources:
        limits:
          cpus: '0.5'
          memory: 256M
    restart: unless-stopped

  # Big pickle application instances
  big-pickle:
    build: .
    deploy:
      replicas: 100
      resources:
        limits:
          cpus: '0.1'
          memory: 64M
        reservations:
          cpus: '0.05'
          memory: 32M
      restart_policy:
        condition: on-failure
        delay: 5s
        max_attempts: 3
    healthcheck:
      test: ["CMD", "curl", "-f", "http://localhost/health"]
      interval: 30s
      timeout: 10s
      retries: 3
      start_period: 40s
    restart: unless-stopped

  # Monitoring
  prometheus:
    image: prom/prometheus:latest
    ports:
      - "9090:9090"
    volumes:
      - ./prometheus.yml:/etc/prometheus/prometheus.yml
    command:
      - '--config.file=/etc/prometheus/prometheus.yml'
      - '--storage.tsdb.path=/prometheus'
      - '--web.console.libraries=/etc/prometheus/console_libraries'
      - '--web.console.templates=/etc/prometheus/consoles'
      - '--storage.tsdb.retention.time=200h'
      - '--web.enable-lifecycle'
    deploy:
      resources:
        limits:
          cpus: '0.5'
          memory: 512M
    restart: unless-stopped

  # Visualization
  grafana:
    image: grafana/grafana:latest
    ports:
      - "3000:3000"
    environment:
      - GF_SECURITY_ADMIN_PASSWORD=admin123
    volumes:
      - grafana-storage:/var/lib/grafana
    deploy:
      resources:
        limits:
          cpus: '0.3'
          memory: 256M
    restart: unless-stopped

volumes:
  grafana-storage:

networks:
  default:
    driver: bridge
    driver_opts:
      com.docker.network.driver.mtu: 1500