Cloudflare incident on November 14, 2024, resulting in lost logs

What this post added

This post details a specific incident involving the Cloudflare Logs system, highlighting failures in Logfwdr configuration and Buftee's overload protection. It provides a deep dive into the architecture of Logfwdr, Logreceiver, Buftee, and Logpush, explaining their roles in collecting and delivering customer event logs. The root causes of the incident are identified as a bug in the Logfwdr configuration system and a failure to configure Buftee's overload protection mechanisms. The post outlines future steps to prevent recurrence, including improved alerting, testing, and overload simulations.