nextjs-app-router-patterns

React Server Components allow direct data fetching in Next.js App Router by executing server-side logic asynchronously. This approach eliminates client-side fetching boilerplate and securely retrieves data before rendering.

Server Actions provide the best way to handle data mutations in Next.js 14 by securely processing form submissions on the server. This technique progressively enhances forms without requiring separate API endpoints.

Parallel and intercepting routes in Next.js work by rendering multiple pages simultaneously and intercepting navigation events. This mechanism enables advanced UI patterns like dynamic modals while preserving the original route context.

You can improve perceived performance in Next.js by wrapping slow components in Suspense boundaries to enable streaming. This immediately sends static HTML while streaming deferred server-rendered data as it resolves.

You need the 'use client' directive only for Next.js components requiring browser interactivity like state or event handlers. Server Components remain the default for static rendering and efficient server-side data fetching.

To optimize metadata generation for SEO in Next.js App Router, export a static metadata object or a dynamic generateMetadata function from your route files. This natively injects search engine tags directly into the server-rendered HTML.