vercel-react-best-practices

To fix React and Next.js performance bottlenecks, review your code for waterfalls, oversized bundles, and inefficient rendering patterns, then apply render-efficient component designs and safer server actions for the highest impact improvements.

Hydration issues and slow server-side rendering in Next.js often stem from inefficient state or effect patterns and poor data-fetching composition, which can be resolved by minimizing serialization and using parallelized async work.

The best way to reduce React bundle size is to use direct package imports and optimize bundle loading, which removes unnecessary client-side code and prevents oversized bundles from slowing down your app.

Yes, you can optimize Next.js data fetching by parallelizing async work and improving server and client composition, which eliminates data-fetching waterfalls and reduces server-side delays.

You should use server components to minimize client-side JavaScript and optimize state management, reserving client components for interactive logic to avoid unnecessary re-renders and inefficient rendering patterns.