Next.jsRoute Handlers: Writing APIs in Next.js
How to use Route Handlers in App Router to write REST APIs: defining methods, reading body, dynamic params, cookies, caching, and testing with Vitest.
Data Fetching and Caching in Next.js (App Router)
Learn how Next.js caches fetched data, control revalidation by time or tag, and when to force dynamic rendering.
Server Actions: Handle Forms Without a Separate API
Learn Server Actions in Next.js to handle form submission directly from components without writing separate Route Handlers or APIs.
App Router in Next.js: Layout, Page and Route
Learn how Next.js App Router organizes routes via page, layout, and route files, with working examples and tests.
Server Component and Client Component in Next.js
Distinguish between Server Components and Client Components in Next.js App Router, when to use each, and common mistakes when combining both.