Cách đúng để fetch data và xử lý race conditions trong useEffect?

Dùng AbortController để cancel fetch request cũ khi effect re-run: const controller = new AbortController(); fetch(url, { signal: controller.signal }); return () => controller.abort().

• Hoặc dùng boolean flag let cancelled = false trong cleanup.
• React Query và SWR tự động handle race conditions.

Use AbortController to cancel the previous request when the effect re-runs: const controller = new AbortController(); fetch(url, { signal: controller.signal }); return () => controller.abort().

• Alternatively, use a boolean cancelled flag and check it in the cleanup.
• React Query and SWR handle race conditions automatically and are the recommended choice for production apps.