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Blog

Deep dives into React internals, V8 optimizations, frontend architecture, and web security. No beginner tutorials — just the internals most developers never explore.

Deep dives on React internals, V8, and frontend architecture — no fluff. Roughly twice a month.

Bot protection is enabled.

No spam. Unsubscribe any time.

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September 29, 2026•16 min read•0

Building Infinite Scroll From Scratch: IntersectionObserver, Not Scroll Handlers

The old way to build infinite scroll was a scroll event listener computing scrollTop + clientHeight = scrollHeight — which fires dozens of times per scroll…

observer

page

ref

+2 more

September 6, 2026•12 min read•0

Why sendBeacon Is the Right Way to Log Data on Page Unload

Fetch/XHR requests die on unload and sync XHR freezes navigation. sendBeacon reliably queues small analytics data after the page is gone.

page

unload

beacon

+2 more

September 4, 2026•12 min read•0

Background Fetch API: Keep Large Downloads Alive After Tab Closes

The Background Fetch API lets browsers continue large file downloads or uploads in the background, surviving page closes and providing native progress UI.

page

fetch

service

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