Redux Persist is a library for persisting Redux state to storage, such as the browser’s local storage or AsyncStorage in React Native applications. It enables you to save and rehydrate the Redux store across browser sessions or app restarts, ensuring that user data remains available even after the application is closed or refreshed.
How Redux Persist works:
- State Serialization: Redux Persist serializes the Redux store’s state into a string representation. This typically involves converting the state object into JSON format, which can be easily stored in persistent storage.
- Storage Configuration: You can configure Redux Persist to use different storage engines, such as the browser’s local storage, session storage, or AsyncStorage in React Native. This allows the serialized state to be saved to the chosen storage medium.
- Automatic Persistence: Redux Persist automatically saves the serialized state to storage whenever the Redux store’s state changes. This ensures that the latest state is persisted in the chosen storage engine, keeping it synchronized with the application’s current state.
- Rehydration: When the application is restarted or reloaded, Redux Persist retrieves the serialized state from storage and rehydrates the Redux store with the saved state. This allows the application to restore the user’s previous state, including data, authentication status, and other application state.
- Integration with Redux Middleware: Redux Persist integrates seamlessly with Redux middleware, allowing developers to enhance its functionality with middleware like Redux Thunk or Redux Saga. This enables more advanced state management and asynchronous logic while still benefiting from state persistence.