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Overview
About Me I'm Den Odell and I've spent 25 years building web systems for companies whose users number in the hundreds of millions. I focus on the intersection of engineering and craft: software that performs well, works for everyone, and holds up at scale.
News
Your SPA Is Leaking Memory. Soak Test It
Memory leaks are a constant battle for backend teams. A server stays up for weeks, responding to requests the whole time, and if any part of the code running on it has a memory leak, even a small one, that server will eventually run out of memory and cras
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The Great Agent Skills Land Grab
Like many developers, I now lean on AI as a big part of my day-to-day tooling. With appropriate steering, I can have any number of coding agents working with me to accelerate my engineering work. For tasks where more specialized knowledge is needed, I can
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Browsers Treat Big Sites Differently
Some browsers ship code that checks which domain you're visiting and changes how the page renders based on it. Yup, you read that right. If site == X , do Y . TikTok gets special treatment. So does Netflix. So does Instagram. And so does SeatGuru. Safari
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The Design-Minded Engineer
In 2002, I was a few weeks into a new role, my second since completing my degree two years earlier. I was a frontend engineer at AKQA , a creative agency in London. I'd just finished one of my first projects, building out a new page for a client, and I th
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You're Looking at the Wrong Pretext Demo
Pretext , a new JavaScript library from Cheng Lou, crossed 7,000 GitHub stars in its first three days. If you've been anywhere near the frontend engineering circles in that time, you've seen the demos: a dragon that parts text like water , fluid smoke ren
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