Partial Cloudflare outage on October 25, 2022

On October 25, 2022, a change to Cloudflare's Tiered Cache system caused some requests to fail with status code 530 for users. The issue lasted for almost six hours and affected about 5% of all requests at peak. The failures were due to side effects of how the company handles cacheable requests across locations. After identifying the problem, a rollback was expedited which completed in 87 minutes. Cloudflare apologized for the inconvenience caused and is taking steps to prevent such incidents from happening again.