Cloud Run Basics

# Cloud Run Deployment Guide for [COMPANY]'s E-Commerce API

## Prerequisites
- Google Cloud account with billing enabled
- `gcloud` CLI installed and authenticated
- Docker installed locally
- GitHub Actions or Cloud Build configured for CI/CD

## Step 1: Containerize the Application
```dockerfile
# Dockerfile
FROM python:3.9-slim
WORKDIR /app
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt
COPY . .
CMD ["gunicorn", "--bind", "0.0.0.0:8080", "app:app"]
```

## Step 2: Build and Test Locally
```bash
docker build -t ecommerce-api .
docker run -p 8080:8080 ecommerce-api
```

## Step 3: Deploy to Cloud Run
```bash
gcloud builds submit --tag gcr.io/[PROJECT-ID]/ecommerce-api
gcloud run deploy ecommerce-api \
  --image gcr.io/[PROJECT-ID]/ecommerce-api \
  --platform managed \
  --region us-central1 \
  --allow-unauthenticated \
  --memory 512Mi
```

## Step 4: Set Up Auto-Scaling
```bash
gcloud run services update ecommerce-api \
  --min-instances 1 \
  --max-instances 10 \
  --cpu-throttling
```

## Step 5: Configure CI/CD (GitHub Actions Example)
```yaml
name: Deploy to Cloud Run
on:
  push:
    branches: [ main ]
jobs:
  deploy:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: google-github-actions/[email protected]
        with:
          project_id: ${{ secrets.GCP_PROJECT }}
          service_account_key: ${{ secrets.GCP_SA_KEY }}
      - run: gcloud builds submit --tag gcr.io/${{ secrets.GCP_PROJECT }}/ecommerce-api
      - run: gcloud run deploy ecommerce-api --image gcr.io/${{ secrets.GCP_PROJECT }}/ecommerce-api --region us-central1
```

## Monitoring
- View logs: `gcloud logging read "resource.type=cloud_run_revision" --limit 50`
- Check metrics: Cloud Console > Cloud Run > [SERVICE_NAME] > Metrics