<div style="display: flex; flex-wrap: wrap; white-space: pre-wrap; align-items: center; "><img height="20" width="20" style="border-radius:50%; margin-right: 4px;" decoding="async" src="https://avatars.githubusercontent.com/u/147741?s=20&v=4" /><strong>tomhughes</strong> left a comment <a href="https://github.com/openstreetmap/openstreetmap-website/pull/6476#issuecomment-3577201811">(openstreetmap/openstreetmap-website#6476)</a></div>
<p dir="auto">The historical context is that we need to ensure that people can't kill the site by finding some way to trigger a very slow database query.</p>
<p dir="auto">This is an ongoing problem right now with trace point queries which is what I was hinting at above because at least sometimes the timeouts are not working a the moment which is causing operational problems - the whole thing has long been tricky to get right because rails has a habit of swallowing the exceptions or transforming them into different sorts of exceptions hence things like this and some of the logic in the timeout methods in the controllers.</p>
<p dir="auto">Unfortunately it's very hard to debug and I suspect it depends on exactly when the timeout fires as I haven't so far been able to reproduce the problem locally I just know that we sometimes have database queries that have been running for 30 minutes despite the timeout.</p>
<p dir="auto">A database timeout doesn't quite do the same thing of course as this timeout in principle also protects against the rails code itself taking a long time for some reason.</p>
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