docker-compose.prod.yml

# Production compose — extends the base docker-compose.yml.
#
# Usage:
#   cp .env.example .env        # fill in real values
#   docker compose -f docker-compose.yml -f docker-compose.prod.yml up -d
#
# This overlay adds:
#   - Redis for distributed rate limiting
#   - Resource limits (CPU / memory)
#   - Log rotation
#   - Restart policy
#   - Health checks

services:
  app:
    environment:
      - FLASK_ENV=production
      - LOG_LEVEL=${LOG_LEVEL:-WARNING}
      - RATE_LIMIT_BACKEND=redis
      - RATE_LIMIT_REDIS_URL=redis://redis:6379/0
      - PREFERRED_URL_SCHEME=${PREFERRED_URL_SCHEME:-https}
    depends_on:
      redis:
        condition: service_healthy
    deploy:
      resources:
        limits:
          cpus: "2.0"
          memory: 1g
        reservations:
          cpus: "0.5"
          memory: 256m
    logging:
      driver: json-file
      options:
        max-size: "10m"
        max-file: "5"

  redis:
    image: redis:7-alpine
    restart: unless-stopped
    volumes:
      - redis-data:/data
    healthcheck:
      test: ["CMD", "redis-cli", "ping"]
      interval: 10s
      timeout: 3s
      retries: 3
    deploy:
      resources:
        limits:
          cpus: "0.5"
          memory: 128m
    logging:
      driver: json-file
      options:
        max-size: "5m"
        max-file: "3"

volumes:
  redis-data: