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.
COURSE · WEB DEVELOPMENT
Next.js App Router in Depth
12 LESSONS
YOUR INSTRUCTOR
Mira Kovac
Mira has spent the last decade building large React applications and then making them fast again. She works on rendering architecture, and cares more about what ships to the browser than about what looks clever in the editor. She teaches the way she debugs: measure first, form a hypothesis, change one thing. Her courses lean heavily on the profiler and the network tab.
View instructorWhat 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.
Course content
4 MODULES · 12 LESSONS · 1H 59M TOTAL
MODULE 01 Routing and Layouts
How the App Router turns folders into URLs, and how layouts let you share UI without re-rendering it.
3 LESSONS · 20M
MODULE 02 Server and Client Components
The boundary that defines the App Router: what runs on the server, what ships to the browser, and how data crosses between them.
3 LESSONS · 33M
Every lesson, searchable to the second.
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