next-best-practices

To fetch data in Next.js client components, you should pass data from Server Components as props or use Route Handlers. This approach prevents client-side fetching overhead and maintains React Server Component boundaries.

The best way to handle errors in Next.js Server Actions is using error.tsx and global-error.tsx files. These file conventions catch unexpected errors and display fallback UIs automatically.

Hydration errors in Next.js usually occur when passing non-serializable props across React Server Component boundaries. Ensure that functions, classes, or DOM elements are not passed from Server to Client Components.

Parallel and intercepting routes in Next.js are used for advanced routing UI patterns like modals. Intercepting routes allow you to load a route within the current layout context, while parallel routes render multiple pages simultaneously.

You can optimize images and fonts in Next.js by utilizing the built-in next/image and next/font components. These tools automatically handle responsive sizing, lazy loading, and font preloading to improve Core Web Vitals.

Yes, Next.js supports self-hosting. You must configure your server to handle App Router features like Server Actions, image optimization, and route handlers correctly to ensure the application runs efficiently.