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database Incidents & Architecture Postmortems

Explore real-world production outages, root cause analyses, and solutions related to database. Learn from the engineering community to prevent these bugs in your own systems.

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Cloudflare 2025: The Bot Management Feature File Crash

Devsolved • Nov 20

Cloudflare 2025: The Bot Management Feature File Crash

DIAGNOSTIC TRACE

12h spent critical

A database permission change caused a duplicate-row query, doubling the size of an ML feature file. The oversized file caused memory exhaustion and crashed edge nodes globally, taking down sites across the internet.