next-best-practices

Next.js server/client boundaries separate server-only data fetching from client interactivity. You should isolate client-side hooks and state into dedicated components, passing serializable props across the boundary to maintain performance and correctness.

The best way to handle dynamic metadata in Next.js is using the generateMetadata function within the app router. This approach aligns file conventions with routing to standardize SEO outputs and minimize runtime surprises.

Robust error handling in Next.js app router projects requires using specialized error boundary files. Define error.tsx files to catch unexpected UI errors and standardize error recovery flows for reliable user experiences.

Next.js supports image and font optimization natively to build scalable architectures. Utilize the built-in Image component and font loading strategies to reduce layout shifts, optimize bundling, and improve overall performance.

You need route handlers for API routes in Next.js when building server-side endpoints that process HTTP requests. They standardize backend API logic within the app router directory structure, replacing older pages router API patterns.