3 minintermediate
CDN Explained: What It Is, How It Works, and How to Use It in Next.js
A CDN speeds up your app by serving assets from servers close to your users. Here's how it works and how Next.js takes advantage of it.
Bite-sized JavaScript, React & Next.js tips.
Short posts with code and diagrams. Readable in minutes.
3 minintermediate
Understanding HttpOnly Cookies in Depth
How HttpOnly cookies work, why they're essential for security, and how to use them safely in Next.js and Express.
2 minintermediate
Prefetching in Next.js Links Explained
How Next.js prefetch works in <Link>, why it makes navigation fast, and when to disable it.
3 minintermediate
Why MUI Avoids Theme Flash on First Load (Dark/Light Mode)
How MUI applies the correct color scheme on the very first paint, and why other UI kits often flash light before switching to dark.
2 minintermediate
Why setState Doesn’t Cause Hydration Errors
Understanding why calling setState after hydration doesn’t produce hydration mismatches in React/Next.js.
4 minintermediate
How useState Works Under the Hood (and Why It Needs use client)
Deep dive into React's useState, how it works internally, and why client components are required in Next.js App Router.
2 minbeginner
What is 'use client' in Next.js?
Understand 'use client' in Next.js App Router: what it means, when to use it, and how it works under the hood.
2 minbeginner
Next.js Page Router vs App Router
Understand the key differences between the old Page Router and the new App Router in Next.js.