Caching Technologies

Caching is predominantly important for mobile app, that is used to reduce network calls, and elevate user experiences.

Types of Caching:

1. In-Memory Caching

2. Local Storage Caching

3. Network Response Caching

4. Image Caching

5. File Caching

The Below Caching Techniques Are Used in Our App:

In Memory Caching:

• Used for short-lived data during app runtime.

• Pacakges / Riverpod: Manage and cache state in memory or else use our own variables to store it.

• Use Case: API responses, user preferences, temporary data.

• Used in Paginated List View ( Widget ) in ESS App.

Local Storage Caching ( Persistent Cache )

• Stores data on the device even after the app is closed.

  • a. SharedPreferences

    • shared_preferences

    • Key-value pairs (Strings, ints, bools )

  • b. Hive

    • Lightweight NoSQL DB

    • Offline caching of objects, user data, theme settings

    • Fast and works well without native dependencies.

  • c. Flutter Cache Manager

    • Third Party Package for handling the file level caching.

    • This was used in our ESS salary slip fetching API.

    • The workable version of flutter cache manager, which we used in our ESS App

      flutter_cache_manager:
        git:
          url: https://github.com/Baseflow/flutter_cache_manager.git
          path: flutter_cache_manager
          ref: "54904e499a06d0364a2b3f4ca9789e5f829f1879"

      
      

    • Other than this version, there is an issue on deleting files while checking the stale object time and max objects.

  Architecture: