Filter/Tag
5 entries
Turn the foundational arc into a debugging superpower: read a DevTools Performance trace through processes, threads, the rendering pipeline and the event loop, then map symptoms to root causes.
Measure right before you fix right. Lighthouse and the Performance tab for diagnosis (lab), CrUX and self-built RUM for real users (field), plus how to throttle to match typical hardware.
Chi phí khởi động service worker, cái bẫy fetch handler rỗng làm chậm mọi request, ngân sách precache, gộp request trùng (coalescing), tận dụng asset immutable, và bộ công cụ đo lường SW trong DevTools.
A hands-on guide to running https://localhost in development: mkcert, OpenSSL self-signed, Caddy, Node/Vite/Next.js dev servers and Docker + nginx — per-OS steps, verified commands, a comparison table, checklist and troubleshooting.
A bilingual deep-dive into source maps: what they are, how they work internally (VLQ encoding, mappings field), how to generate and configure them, and best practices for production debugging.