Refactoring Thunk-Based APIs to RTK Query in Redux Toolkit
RTK Query simplifies data fetching and caching compared to manually managing async thunks. When refactoring from thunk-based APIs, you can move API logic from slices and thunks into createApi endpoints, which automatically generate hooks and handle caching, re-fetching, and status management.
1. Identify Thunk Logic: Locate existing
createAsyncThunkcalls that perform API requests and return fetched data.2. Create an API Slice: Replace thunk logic with
createApiand define endpoints usingbuilder.query()orbuilder.mutation().3. Remove Manual Status Handling: Eliminate
pending,fulfilled, andrejectedreducers—RTK Query automatically manages loading and error states.4. Use Auto-Generated Hooks: Replace manual dispatch and selectors with RTK Query hooks like
useGetUsersQuery()oruseAddUserMutation().5. Delete Redundant Slice Code: Remove async reducers and state properties that are now managed by RTK Query.
By migrating from thunks to RTK Query, you reduce boilerplate, simplify async logic, and gain built-in caching, invalidation, and automatic re-fetching for a more efficient and maintainable Redux architecture.