Implementing Flutter Caching and Offline-First Architectures

Contents

• Selecting a Caching Strategy
• Implementing Offline-First Data Synchronization
• Managing File System and SQLite Persistence
• Optimizing UI, Scroll, and Image Caching
• Caching the FlutterEngine (Android)
• Workflows

Selecting a Caching Strategy

Apply the appropriate caching mechanism based on the data lifecycle and size requirements.

• If storing small, non-critical UI states or preferences: Use shared_preferences.
• If storing large, structured datasets: Use on-device databases (SQLite via sqflite, Drift, Hive CE, or Isar).
• If storing binary data or large media: Use file system caching via path_provider.
• If retaining user session state (navigation, scroll positions): Implement Flutter's built-in state restoration to sync the Element tree with the engine.
• If optimizing Android initialization: Pre-warm and cache the FlutterEngine.