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Thoughts, tutorials, and real-world engineering stories from shipping products.
JavaScript is single-threaded yet handles timers, network calls, and UI events without freezing. Understanding the event loop - call stack, task queue, microtask queue - is the key to writing async code that actually works as intended.
May 8, 2026
ArticleBoth CSS Grid and Flexbox can solve most layout problems. But using the wrong one creates brittle, over-complicated CSS. Here's how to think about the choice clearly - with real examples.
May 5, 2026
ArticleChat apps, live dashboards, collaborative editors - they all need data to arrive instantly. But not every approach is equal. Here's the full breakdown of WebSockets, long-polling, and SSE so you can pick the right tool.
May 2, 2026
ArticleFree-tier hosting platforms spin down your server after inactivity. The first request after that takes 30+ seconds. Here's why it happens and exactly how to prevent it.
April 27, 2026
ArticleA scroll-snap feature that worked perfectly - until users got completely stuck and couldn't scroll past a section on desktop. The culprit was a sub-pixel rounding error hiding in plain sight.
April 21, 2026
ArticleYou deployed your React app. The homepage loads fine. Navigation works. Then someone types a URL directly - and gets a 404. Here's exactly why this happens and how to fix it on every major platform.
April 15, 2026
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