nextjs-app-router-patterns

Data fetching in the Next.js App Router uses Server Components to fetch data directly on the server. You can implement static generation, dynamic rendering, and Incremental Static Regeneration strategies to optimize performance and caching behavior.

Use Client Components instead of Server Components when you need interactivity, state, or browser-only APIs. Server Components handle data fetching and static rendering, while Client Components manage event listeners and UI updates.

Implement mutations and form submissions securely using Server Actions in the Next.js App Router. This allows you to write server-side mutation functions callable directly from client components without separate API endpoints.

Parallel and intercepting routes are advanced routing patterns used for complex UIs and modal experiences in Next.js. They allow rendering multiple routes simultaneously within a layout and intercepting paths for modals.

Configure dynamic metadata for SEO in the Next.js App Router by exporting a metadata object or function from layout and page files. This generates optimized meta tags for improved search engine visibility.

The Next.js App Router supports custom API endpoints through Route Handlers. You create API endpoints by defining route.js files within your app directory, enabling server-side logic processing for your web application.