CSCosmos
Cosmos.
The Mastery Path

Learn Next.js
Step by Step.

Follow our structured roadmap to go from a beginner to a Next.js architect.35 professional concepts, organized by complexity.

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Your Mastery Progress

You have mastered 0 out of 35 essential concepts.

Phase 01: 0/7
Phase 02: 0/7
Phase 03: 0/8
Phase 04: 0/8
Phase 05: 0/5
01

The Foundations

Master the essential building blocks of the App Router and component architecture.

App Router Overview
File-based Routing
Nested Routes
Dynamic Routes
Route Groups
Client Components
use client Directive
02

Core Architecture

Deep dive into how Next.js renders and fetches data on the modern web.

React Server Components
Server vs Client boundary
SSR (Server-Side)
SSG (Static)
Hydration Process
Fetching on Server
Fetching on Client
03

Advanced Routing & UI

Complex UI patterns, layouts, and robust error handling.

Layouts & Templates
Loading UI
Error Boundaries
Not Found Routes
Parallel Routes
Intercepting Routes
Middleware
Route Handlers
04

Optimization & Delivery

Polish your application for maximum performance and global scale.

Streaming Architecture
ISR (Incremental)
Caching & Revalidation
fetch Cache Options
Metadata API
Image Optimization
Font Optimization
Deployment Model
05

Modern Interactions

Handle data mutations and advanced hybrid rendering patterns.

Server Actions
Form Handling
Optimistic Updates
Partial Prerendering
Server-only Packages

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