Skip to content
Advanced React Patterns

Lesson 3 of 3 · 7 min

x
3/3

Lesson position in the course — not completion. Use Mark Complete to track finished lessons (saved in this browser).

Performance Optimization

Use React.memo, useMemo, useCallback wisely. Profile with React DevTools and avoid premature optimization. This outline is in progress — expect a short read until full lessons ship.

Check your understanding

  • When is React.memo / useMemo worth it?Show answer

    Answer

    When profiling shows expensive re-renders or recalculations — not as a default on every component.
  • What should you do before optimizing?Show answer

    Answer

    Profile with React DevTools (or similar) to find the actual bottleneck.
Previous

Progress is saved in this browser.

Finish Course