google-app-engine

# Google App Engine

**Status**: Production Ready
**Last Updated**: 2026-01-24
**Dependencies**: Google Cloud SDK (gcloud CLI)
**Skill Version**: 1.0.0

---

## Quick Start (10 Minutes)

### 1. Prerequisites

```bash
# Install Google Cloud SDK
# macOS
brew install google-cloud-sdk

# Or download from https://cloud.google.com/sdk/docs/install

# Authenticate
gcloud auth login
gcloud config set project YOUR_PROJECT_ID

# Enable required APIs
gcloud services enable appengine.googleapis.com
gcloud services enable sqladmin.googleapis.com
gcloud services enable secretmanager.googleapis.com
```

### 2. Create app.yaml

```yaml
# app.yaml - Standard Environment (Python 3.12)
runtime: python312
instance_class: F2

env_variables:
  DJANGO_SETTINGS_MODULE: "myproject.settings.production"

handlers:
  # Static files (served directly by App Engine)
  - url: /static
    static_dir: staticfiles/
    secure: always

  # All other requests go to the app
  - url: /.*
    script: auto
    secure: always

automatic_scaling:
  min_instances: 0
  max_instances: 10
  target_cpu_utilization: 0.65
```

### 3. Deploy

```bash
# Deploy to App Engine
gcloud app deploy

# Deploy with specific version
gcloud app deploy --version=v1 --no-promote

# View logs
gcloud app logs tail -s default
```

---

## Standard vs Flexible Environment

### Standard Environment (Recommended for Most Apps)

**Use when**: Building typical web apps, APIs, or services that fit within runtime constraints.

| Aspect | Standard |
|--------|----------|
| **Startup** | Fast (milliseconds) |
| **Scaling** | Scale to zero |
| **Pricing** | Pay per request |
| **Runtimes** | Python 3.8-3.12 |
| **Instance Classes** | F1, F2, F4, F4_1G |
| **Max Request** | 60 seconds |
| **Background** | Cloud Tasks only |

```yaml
# app.yaml - Standard
runtime: python312
instance_class: F2
```

### Flexible Environment

**Use when**: Need custom runtimes, Docker, longer request timeouts, or background threads.

| Aspect | Flexible |
|-------