3 minintermediate
React memo vs useMemo vs useCallback — When to Use Which
Three React APIs that all say 'memoize' — but they do different things. Clear explanations, examples, and a cheatsheet.
Bite-sized JavaScript, React & Next.js tips.
Short posts with code and diagrams. Readable in minutes.
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.
3 minintermediate
Are TypeScript Enums a Good Idea? (Bundle Size & Runtime)
A practical guide to TypeScript enums, their runtime cost, and better alternatives for modern frontend apps.
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.
2 minintermediate
React Higher-Order Components (HOC)
Understand Higher-Order Components (HOCs) in React with examples, use cases, downsides, and a comparison to hooks.
1 minbeginner
JavaScript's Event Loop — Simple Guide (with SVG Timeline)
Event loop explained with a clean SVG timeline showing the actual execution order: Start → End → Promise → Timeout.
2 minintermediate
React useRef vs useState — When to Use Which
A simple guide to understanding when to use useRef and useState in React, with examples, mental models, and a quick cheatsheet.