nextjs

Ship a full-stack app on Next.js 15: Prisma schema, migrations vs db push, the hot-reload-safe client singleton, Server Components reading data, Server Actions mutating it, useOptimistic, Auth.js, and a Vercel + Neon deploy.

The RSC mental model: server-by-default, the 'use client' boundary, what can cross it, Server Actions with 'use server', streaming with Suspense, and a Postgres-to-Client end-to-end example.

Next.js 15 App Router: page/layout/loading/error files, nested layouts, dynamic and catch-all segments, route groups, parallel routes, and the Metadata API for SEO — with the file tree as a diagram.