HOW WE BUILT PINGORA, THE PROXY THAT CONNECTS CLOUDFLARE TO THE INTERNET

Summary from the TLDR InfoSec newsletter

Cloudflare made the decision to abandon its usage of Nginx in favor of building its own proxy. This article goes through the issues Cloudflare faced with Nginx and the design decisions that went into Pingora's design. It concludes with an in-depth review of the performance gains that were achieved.