Redux API Integration with RTK Query

RTK Query

Declares endpoints with caching, deduping and tag invalidation - replacing most hand-written thunks.

Auth Headers

Attach Bearer tokens in prepareHeaders; invalidate tags after mutations to refetch lists.

Rule of Thumb

Server state goes in RTK Query; UI state stays in slices or useState.

Key Points

• Queries cache; mutations invalidate.
• isLoading and error come free.
• Middleware chain stays extendable.