Performance optimization in React is crucial for providing a smooth user experience. Here are the techniques I use in production applications.
## Code Splitting
Use React.lazy and Suspense for code splitting. This reduces the initial bundle size and improves load times.
## Memoization
React.memo, useMemo, and useCallback are powerful tools, but use them wisely. Over-memoization can actually hurt performance.
## Virtual Scrolling
For long lists, use virtualization. React Window and React Virtual are excellent libraries for this.
## Bundle Optimization
Analyze your bundle with webpack-bundle-analyzer and remove unused dependencies.
## Profiling
Use React DevTools Profiler to identify performance bottlenecks in your components.
Optimization is an ongoing process. Regularly profile your application and make improvements based on real user data.
