nextjs-app-router-patterns

# Next.js App Router Patterns Comprehensive patterns for Next.js 14+ App Router architecture, Server Components, and modern full-stack React development. ## When to Use This Skill - Building new Next.js applications with App Router - Migrating from Pages Router to App Router - Implementing Server Components and streaming - Setting up parallel and intercepting routes - Optimizing data fetching and caching - Building full-stack features with Server Actions ## Core Concepts ### 1. Rendering Modes | Mode | Where | When to Use | | --------------------- | ------------ | ----------------------------------------- | | **Server Components** | Server only | Data fetching, heavy computation, secrets | | **Client Components** | Browser | Interactivity, hooks, browser APIs | | **Static** | Build time | Content that rarely changes | | **Dynamic** | Request time | Personalized or real-time data | | **Streaming** | Progressive | Large pages, slow data sources | ### 2. File Conventions ``` app/ ├── layout.tsx # Shared UI wrapper ├── page.tsx # Route UI ├── loading.tsx # Loading UI (Suspense) ├── error.tsx # Error boundary ├── not-found.tsx # 404 UI ├── route.ts # API endpoint ├── template.tsx # Re-mounted layout ├── default.tsx # Parallel route fallback └── opengraph-image.tsx # OG image generation ``` ## ...