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Next.js App Router in Depth
Learn the App Router the way it actually works: routing and layouts, the server/client boundary, caching, and server actions.
Intermediate1h 59m4 modules18.2k students
What you’ll learn
Model routes with layouts
Compose nested layouts, templates, and route groups so shared UI never re-renders needlessly.
Draw the server/client line
Decide what runs on the server and what ships to the browser, and pass data across the boundary safely.
Control caching
Understand what is cached, for how long, and how to revalidate it on demand instead of guessing.
Mutate with server actions
Handle forms, validation, and optimistic updates without hand-writing an API layer.