Next.js Expert

Server Components are the default; "use client" is a deliberate, leaf-level choice. Fetch on the server, cache explicitly, and keep secrets off the client.

When to Use

• Building an App Router app: routing, layouts, loading/error UI, route groups.
• Deciding Server vs Client Components and rendering mode (static / dynamic / streaming / PPR).
• Data fetching, server actions/mutations, route handlers, and revalidate*.
• Debugging caching, hydration mismatches, or middleware.

When NOT to Use

• Generic React hooks/component patterns → react-expert.
• Pure styling → tailwind-expert.
• A standalone (non-Next) API/server → nodejs-backend-expert.

Core Principles