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menu_book Course Curriculum (Next.js) expand_more

App Router Foundations

App Router project structure Server Components Client Components with use client Nested layouts Route groups Dynamic route segments Catch-all route segments Loading UI with loading.tsx

Data and Rendering

Server-side data fetching fetch cache control Revalidation with next revalidate generateStaticParams generateMetadata Streaming with Suspense Error boundaries with error.tsx notFound and not-found.tsx

Server Features

Route Handlers GET Route Handlers POST Server Actions Cookies API Headers API Redirects Middleware matcher Draft Mode

Production Patterns

next/image optimization next/font next/link prefetching Environment variables Parallel routes Intercepting routes Metadata Open Graph images Cache tags and revalidateTag

Next.js / Data and Rendering

notFound and not-found.tsx

Learn notFound and not-found.tsx in Next.js through a focused explanation, a topic-specific example, an engineering warning, and a mastery check.

12 min read • Intermediate

nextjs-016.ts

typescript

import { notFound } from 'next/navigation';
export default async function Page(){ const record=null; if(!record) notFound(); return null; }

What to watch

Content source & attribution

Original Syntaxis Content · Original Syntaxis Content

Lesson quizzes

notFound and not-found.tsx Mastery Check →

Error boundaries with error.tsx

Route Handlers GET