Optimizing Render Performance in React with Hooks: A Deep Dive into useMemo and useCallback

This document is a concise guide to React performance optimization, focusing on when and how to use the hooks `useMemo` and `useCallback` to avoid unnecessary re-renders, with examples (e.g., memoizing an expensive Fibonacci calculation and stabilizing callback references for child components using `React.memo`). It emphasizes profiling first and using these hooks judiciously to improve render performance in complex applications.