// writing
Posts tagged #performance — Page 2
A mix of technical deep-dives, career reflections, and dispatches from the road.
tag: #performance
developmentAug 20, 2026· 4 min
Declarative Partial Updates: Out-of-Order HTML Streaming Without a Framework
Chrome 148 ships experimental support for filling HTML placeholders out of order and streaming markup into the DOM.
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developmentAug 17, 2026· 3 min
React's Activity Component: Hide UI Without Losing Its State
React 19.2's Activity component hides a subtree instead of unmounting it, so state, scroll position, and DOM survive the round trip.
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developmentAug 16, 2026· 3 min
revalidateTag vs updateTag: Next.js Split Cache Invalidation in Two
Next.js 16 gave cache invalidation two different functions instead of one, and the split maps to a real distinction: content that can lag versus content the…
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developmentAug 9, 2026· 3 min
The Long Animation Frames API: Find What Actually Broke Your INP
Your field data says INP is 400ms. Your local profile says everything is fine. The Long Animation Frames API closes that gap by naming the script, the…
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developmentJul 23, 2026· 3 min
JavaScript Iterator Helpers: Stop Converting to Arrays First
Iterator helpers bring map, filter, take, and drop to any iterator without spreading into an array first.
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developmentJul 16, 2026· 4 min
The Soft Navigations API: Core Web Vitals Finally Work in SPAs
Chrome ships the Soft Navigations API unflagged in 151, giving single-page apps a standardized way to measure LCP, INP, and CLS per route change instead of…
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developmentJul 13, 2026· 3 min
Declarative Shadow DOM: Web Components That Render Before Your JavaScript Does
Shadow DOM used to mean a blank page until your bundle loaded. The shadowrootmode attribute changed that, and it has been in every major browser since early…
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developmentJul 12, 2026· 4 min
OPFS: A Real File System in the Browser
The Origin Private File System gives you byte-level, synchronous file I/O in the browser. Here's how it works, when to reach for it, and why it's the reason…
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developmentJun 28, 2026· 3 min
scheduler.yield(): The One-Liner That Fixes Your INP
A practical look at scheduler.yield(), the browser API that breaks up long tasks and keeps the main thread responsive without the setTimeout penalty.
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