Next.js App Router - Production Patterns Version : Next.js 16.0.3 React Version : 19.2.0 Node.js : 20.9+ Last Verified : 2025-11-21 Table of Contents 1. When to Use This Skill 2. When NOT to Use This Skill 3. Next.js 16 Breaking Changes 4. Cache Components & Caching APIs 5. Server Components 6. Server Actions 7. Route Handlers 8. React 19.2 Features 9. Metadata API 10. Image & Font Optimization 11. Top 5 Critical Errors 12. Performance Patterns 13. TypeScript Configuration --- When to Use This Skill Use this skill when you need: - Next.js 16 App Router patterns (layouts, loading, error bounda…