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rn-data-fetching

• Mobile
• knowledge — teaches; changes nothing
• 40 lines
• 4 references

Use when fetching data from APIs in React Native: choosing between fetch+useEffect (didactic only) and TanStack Query (production default), wiring the QueryClient provider, building queries / mutations / optimistic updates / paginated and infinite lists / cache invalidation / refetch on focus, handling loading and error states, AsyncStorage persistence, offline-first behavior. Triggers on: "fetch posts from API", "infinite scroll", "optimistic mutation", "cache invalidation", "loading state". Not for: styling lists (rn-styling), backend setup (rn-backend, Wave 3 — provider-agnostic), GraphQL clients (out of scope).