ReactReact Fiber là reimplementation của React's reconciliation algorithm (React 16+).
- Cho phép chia nhỏ rendering work thành units, có thể pause, resume, hay abort.
- Enables: incremental rendering, priority-based updates, concurrent features (Suspense, useTransition).
- Giải quyết vấn đề previous stack reconciler không thể interrupt render.
React Fiber is a complete reimplementation of React's reconciliation algorithm introduced in React 16.
- It breaks rendering work into small units that can be paused, resumed, or aborted.
- This enables incremental rendering, priority-based updates, and all concurrent features like Suspense and useTransition.
- It solved the core problem with the previous stack reconciler, which could not interrupt a render once started.