SWR and React Query for Data Caching
Use SWR or TanStack Query to fetch, cache, deduplicate, and revalidate server data, replacing manual useEffect fetch patterns.
Server State Is Different
Network data is not just regular state. It needs: caching, deduplication, background refresh, loading/error tracking, retry. Manual useEffect + useState fetch patterns reimplement these badly.
SWR vs TanStack Query
SWR (Vercel): small, simple, hooks-only. TanStack Query (formerly React Query): bigger, more features (mutations, infinite, prefetching, devtools). Both are excellent.
All lessons in this course
- Fetch API: GET POST PUT DELETE
- Axios: Interceptors and Base URL
- Error Handling: HTTP Status Codes
- SWR and React Query for Data Caching