Render

# render.yaml - Infrastructure as Code
services:
  # 웹 서비스 (백엔드 API)
  - type: web
    name: api-server
    env: node
    region: oregon
    plan: starter  # free, starter, standard, pro
    buildCommand: npm ci && npm run build
    startCommand: npm start
    healthCheckPath: /health
    envVars:
      - key: NODE_ENV
        value: production
      - key: DATABASE_URL
        fromDatabase:
          name: mydb
          property: connectionString
      - key: REDIS_URL
        fromService:
          name: redis-cache
          type: redis
          property: connectionString
    autoDeploy: true

  # 정적 사이트 (프론트엔드)
  - type: web
    name: frontend
    env: static
    buildCommand: npm run build
    staticPublishPath: ./dist
    headers:
      - path: /*
        name: Cache-Control
        value: public, max-age=31536000
    routes:
      - type: rewrite
        source: /*
        destination: /index.html

  # 백그라운드 워커
  - type: worker
    name: job-processor
    env: python
    buildCommand: pip install -r requirements.txt
    startCommand: python worker.py

  # 크론 잡 (매일 자정 실행)
  - type: cron
    name: daily-cleanup
    env: node
    schedule: "0 0 * * *"
    buildCommand: npm ci
    startCommand: npm run cleanup

databases:
  - name: mydb
    databaseName: myapp
    plan: starter  # free, starter, standard, pro

# Redis 캐시
  - name: redis-cache
    type: redis
    plan: starter

# Render에서 Docker 사용
FROM python:3.11-slim

WORKDIR /app

# 의존성 설치 (캐시 활용)
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# 애플리케이션 복사
COPY . .

# 비루트 사용자로 실행
RUN useradd -m appuser && chown -R appuser /app
USER appuser

# Render는 PORT 환경변수 자동 제공
EXPOSE $PORT

# Gunicorn으로 Django 실행
CMD gunicorn myapp.wsgi:application \
    --bind 0.0.0.0:$PORT \
    --workers 2 \
    --threads 4 \
    --worker-class gthread \
    --access-logfile - \
    --error-logfile -

# Health Check (render.yaml에서도 설정 가능)
HEALTHCHECK --interval=30s --timeout=3s \
  CMD curl -f http://localhost:$PORT/health || exit 1

# Render 배포 관련 스크립트 예시

# 빌드 스크립트 (build.sh)
#!/bin/bash
set -e

echo "Installing dependencies..."
pip install -r requirements.txt

echo "Running migrations..."
python manage.py migrate --no-input

echo "Collecting static files..."
python manage.py collectstatic --no-input

echo "Build complete!"

# 시작 스크립트 (start.sh)
#!/bin/bash
set -e

# Render가 제공하는 환경변수 확인
echo "Starting on port: $PORT"
echo "Database: ${DATABASE_URL:0:30}..."

# Gunicorn 시작
exec gunicorn myapp.wsgi:application \
  --bind "0.0.0.0:${PORT:-8000}" \
  --workers "${GUNICORN_WORKERS:-2}"

# 환경별 설정 (render.yaml envVars에서 설정)
# RENDER=true (Render 환경 감지)
# IS_PULL_REQUEST=true (PR Preview 환경)
# RENDER_EXTERNAL_HOSTNAME=myapp.onrender.com