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SWR and RTK Query in Practice

SWR and RTK Query are two of the most popular data-fetching libraries in React today. SWR (stale-while-revalidate) from Vercel emphasizes simplicity and performance, automatically revalidating data in the background. RTK Query (part of Redux Toolkit) provides a batteries-included solution with opinionated caching, optimistic updates, and deep integration with Redux. Both solve the same problem—server-state management—but with fundamentally different philosophies. This series builds the same real-world feature with each library, side by side, revealing trade-offs in developer experience, bundle size, TypeScript ergonomics, and team scalability. By the end, you'll understand when to reach for SWR's minimalist elegance versus RTK Query's comprehensive structure—and how TanStack Query (React Query) offers a compelling middle ground.

Articles in this series