Mobile Backend Development

# Mobile Backend Development

Mobile apps have unique requirements. Here's how to build backends that serve them well.

## Key Considerations

**Bandwidth**

Minimize payload sizes. Use compression, pagination, and field filtering.

**Offline Support**

Design for eventual consistency. Sync when connectivity returns.

**Battery Life**

Reduce polling. Use push notifications and WebSockets wisely.

## API Design for Mobile

**GraphQL Benefits**

Perfect for mobile—fetch exactly what you need.

**Versioning**

Mobile users don't update immediately. Support multiple versions.

**Caching**

Implement ETags and conditional requests.

## Authentication

- OAuth 2.0 with PKCE

- Refresh token rotation

- Biometric integration

- Secure key storage

## Push Notifications

FCM for Android, APNs for iOS. Keep messages relevant and timely.

Mobile-first backend design improves all your clients.