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NoteJan 20268 min read

Next.js App Router Patterns

Quick reference for Next.js 14 App Router, Server Actions, and advanced caching strategies.

Next.js App Router Patterns

The App Router paradigm shift requires adapting to Server Components and new data fetching strategies.

  • Server Components by Default: Components are Server Components unless you add 'use client'. This reduces client-side JavaScript.
  • Server Actions: Mutate data directly on the server without creating an API route. Use them in forms via the action prop.
  • Caching: Next.js caches heavily by default. Use revalidatePath or revalidateTag to purge caches when data mutations occur.
  • Streaming: Wrap slow components in Suspense boundaries to stream the UI to the user progressively.
Next.js App Router Patterns