react-data-fetching

To fix slow React data loading caused by request waterfalls, you must identify dependent versus independent network calls and parallelize independent requests using Promise.all or dependency-aware promise orchestration to eliminate sequential fetching.

The best way to replace useEffect for fetching data in React is using TanStack Query or SWR for structured caching, request deduplication, background revalidation, and error handling that manual fetch state management lacks.

Suspense handles loading states for React data fetching by using Suspense boundaries and suspense-capable hooks to declaratively coordinate UI loading states without spreading isLoading logic across your component tree.

To implement optimistic updates with TanStack Query in React, you apply mutations for instant UI feedback while enforcing structured optimistic update rollback behavior to revert the cache if the server request fails.

Yes, you can prefetch route data before navigation in a Vite React application by implementing prefetching and route loader patterns to fetch required server data ahead of route transitions for smoother performance.

You should not use TanStack Query for React data fetching if your application relies solely on static client state without server data, as its structured caching, deduplication, and background revalidation mechanisms target dynamic server-data loading.