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Learn & master TanStack React Query v5 with this one video! Including useQuery, useInfiniteQuery, useMutation, optimistic updates, and more. Starting code: https://github.com/codinginflow/react... Finished project: https://github.com/codinginflow/react... ⭐ Get my full-stack Next.js with Express & TypeScript course: https://codinginflow.com/nextjs ✅ Get my free React Best Practices course: https://www.codinginflow.com/reactbes... 💌 Join my newsletter for regular web dev tips: https://codinginflow.com/newsletter 💬 Join our developer community on Discord: https://codinginflow.com/discord 📣 Follow Coding in Flow on social media: Twitter:   / codinginflow   Instagram:   / codinginflow   TikTok:   / codinginflow   Facebook:   / codinginflow   Timestamps: 0:00 - What is React Query and why should you use it? 4:05 - Starting code 6:21 - Why you shouldn't fetch in useEffect 19:15 - React Query installation & setup (queryClient, QueryClientProvider, React Query Devtools) 24:02 - Basic useQuery usage, queryKey best practices, error retries 36:24 - Search with React Query (debounced) 43:46 - Infinite loading (useInfiniteQuery) 56:19 - Custom hook 57:46 - Mutations (useMutation), invalidateQueries 1:09:27 - Updating the cache (setQueryData, InfiniteData) 1:19:35 - Optimistic updates (onMutate), error rollbacks