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How can I implement offline data caching in a Flutter app?
Asked on Dec 02, 2025
Answer
Implementing offline data caching in a Flutter app involves using local storage solutions to persist data when the device is offline. This can be achieved using packages like `sqflite` for SQLite databases or `hive` for lightweight key-value storage, which allows the app to store and retrieve data without a network connection.
Example Concept: Offline data caching in Flutter typically involves using a local database or storage solution to save data fetched from a network call. When the app detects a lack of connectivity, it retrieves data from the local cache instead. This approach ensures that users can access data even when offline, improving the app's usability and performance. Implementing a caching strategy involves intercepting network requests, storing responses locally, and checking the cache before making network calls.
Additional Comment:
- Use the `connectivity_plus` package to detect network status changes.
- Consider using `sqflite` for structured data or `hive` for simpler key-value pairs.
- Implement a cache expiration policy to keep data fresh and relevant.
- Test the caching mechanism under various network conditions to ensure reliability.
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