Cloudflare outage on November 18, 2025 post mortem 8 months ago
Attempt to reproduce the Cloudflare 2025-11-18 outage.
Cloudflare's incident report is written clearly and explicitly, so based on my own understanding, I’m going to try reproducing this outage. Already completed:
CK cluster Permission change triggering data doubling Cache propagation Unaffected proxy services Proxy services with bot score errors
TODO:
unwrap panic during pre-allocation of cache Full demonstration of the entire outage process