Cập nhật hàng ngày cho Frontend Engineer Việt Nam
INP chính thức thay thế FID từ tháng 3/2024 và đến 2026 đã trở thành metric quyết định ranking. Bài viết hướng dẫn cách đo lường và optimize INP cho ứng dụng frontend.
Learn how to use AI coding assistants to diagnose and fix React performance problems in minutes instead of hours. Covers re-render detection, bundle analysis, and runtime profiling with Claude Code and React DevTools.
INP replaced FID as the core responsiveness metric. Here are battle-tested strategies to optimize Interaction to Next Paint in real-world Next.js applications.
INP replaced FID as a Core Web Vital. Learn practical techniques to reduce interaction latency and hit the "Good" threshold of under 200ms in real-world apps.
Hướng dẫn thực tế cách audit bundle size và áp dụng tree-shaking hiệu quả để giảm đến 60% lượng JavaScript gửi đến browser.
Large JavaScript bundles kill performance. Learn tree-shaking, code-splitting, and modern bundler tricks to dramatically reduce what you ship to users.
A step-by-step walkthrough of auditing and shrinking a bloated Next.js bundle — from 420KB to 168KB gzipped — using real tools and techniques.
The React DevTools Profiler reveals exactly which components are slow and why. Learn to read flame graphs, spot unnecessary re-renders, and prioritize what to fix.
Images account for over 50% of page weight on most sites. Master Next.js image optimization to deliver perfectly sized, formatted images automatically.
The next/image component handles the basics, but real-world image optimization requires understanding formats, sizing strategies, and loading patterns.
Edge Runtime runs your code at CDN nodes worldwide, eliminating cold starts. Learn when it's the right choice and what limitations to expect.
Lazy loading is one of the highest-ROI performance wins. Learn the correct patterns for images, React components, and routes — and the mistakes that hurt more than they help.
Web Workers are powerful but painful to use raw. Comlink makes them feel like regular async functions. Learn how to offload heavy computation without janky UIs.