Performing Optimistic Updates in RTK Query
Optimistic updates in RTK Query allow you to immediately reflect a change in the UI before the server confirms it. This provides a smoother user experience by making the app feel more responsive.
1. Use
onQueryStarted: Handle side effects when a mutation is triggered.2. Apply Temporary Cache Updates: Use
updateQueryDatato optimistically update cached data.3. Revert on Failure: If the mutation fails, use the rollback function to undo changes.
In this example, the UI is immediately updated when a post is modified. If the server responds with an error, RTK Query automatically rolls back to the previous state.
- Enhanced User Experience: Changes appear instantaneously in the UI.
- Reduced Perceived Latency: The app feels faster and more responsive.
- Built-in Rollback: Safe recovery from failed updates with minimal effort.
Optimistic updates make your RTK Query app more interactive while maintaining consistency between client and server data.