React Performance: Beyond Memo and useCallback

# React Performance: Beyond Memo and useCallback

Everyone knows about React.memo and useCallback, but there's so much more to React performance optimization.

Virtual Scrolling

For large lists, virtual scrolling is a game-changer. Only render what's visible in the viewport.

Code Splitting at the Route Level

Use dynamic imports to split your code by route:

const Dashboard = lazy(() => import('./Dashboard'))

Optimize Bundle Size

• Analyze your bundle with tools like webpack-bundle-analyzer
• Tree-shake unused code
• Use production builds
• Consider using Preact for smaller bundle size

Avoid Prop Drilling

Use Context API or state management libraries to avoid unnecessary re-renders from prop drilling.

Measure Before Optimizing

Use React DevTools Profiler to identify actual bottlenecks. Don't optimize blindly!

Conclusion

Performance optimization is about making the right trade-offs. Focus on what matters to your users.