# Cloudflare’s Nov 18 Outage, Translated and Dissected

> A ClickHouse permission tweak doubled a feature file, tripped a Rust hard limit, and froze Cloudflare’s core traffic for six hours—their worst outage since 2019. Here’s the full translation plus commentary.

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LLMS index: [llms.txt](/llms.txt)

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[![featured](/img/hero/cloud/cf-ck-down.jpg)](https://vonng.com/en/cloud/cf-ck-down/)

A ClickHouse permission tweak doubled a feature file, tripped a Rust hard limit, and froze Cloudflare’s core traffic for six hours—their worst outage since 2019. Here’s the full translation plus commentary. [**Read more**](https://vonng.com/en/cloud/cf-ck-down/)