Deep Dive Bug Fixes

<h1> Production Was Down… But Everything Looked Normal 🤯 </h1> <blockquote> <p>A real debugging story about silent failures and why thinking matters more than tools.</p>

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<p>Your AI system isn't going to crash. It's going to drift.</p> <p>A recommendation engine making 1.4 model calls instead of 1. A retrieval pipeline fetching 5 chunks instead of

<p><em>This is a submission for <a href="https://dev.to/bugsmash">DEV's Summer Bug Smash: Clear the Lineup</a> powered by <a href="https://sentry.io/" rel="noopener

<p>This is a submission for DEV's Summer Bug Smash: Clear the Lineup.</p> <h2> The bug </h2> <p><a href="https://npmx.dev" rel="noopener noreferrer">npmx.dev</a> is a fast browser

<p>An inference server stopped generating tokens while more than 200 GiB of host memory remained available. Its health endpoint kept returning HTTP 200. The first visible

<p>The thing that breaks before 1,000 users is almost never the code.</p> <p>Not a race condition. Not a memory leak. Not a missing index. Founders assume their app will collapse

<p>Four agents entered an infinite loop in November 2025. They ran for 11 days. The bill was $47,000. Nobody noticed until it was over.</p> <p>The team was running a market