Optimizing React Performance for E-commerce

In e-commerce, speed equals revenue. Amazon found that every 100ms of latency cost them 1% in sales. Here is how I optimize React apps for maximum conversion.

Code Splitting

Don't ship the admin dashboard code to the customer. Use React.lazy and Suspense to break your bundle into smaller chunks that load only when needed.

Memoization

Use useMemo and useCallback to prevent unnecessary re-renders, especially for complex lists of products. Virtualization (using libraries like react-window) is also essential for rendering long lists of inventory.

Image Optimization

Images are usually the heaviest assets. Use Next.js Image component or Cloudinary to serve modern formats like AVIF and WebP automatically.