https://twitter.com/jeffdean/status/1282882643277656065 seems to explain it - "v... | Hacker News

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		geofft on Oct 24, 2021 \| parent \| context \| favorite \| on: The Financial Times’ 404 page https://twitter.com/jeffdean/status/1282882643277656065 seems to explain it - "varz" is one of the "z pages" (a convention that by now has leaked outside Google), so it's handled by the Google web server infrastructure, not by the YouTube app. And "abortabortabort" and a few others are commands that are restricted at the load-balancer level.

jeffbee on Oct 25, 2021 [–]

Some of this style has leaked out in different places. For example Envoy (and Istio, if I recall correctly) implement the /quitquitquit handler.

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