Don't underestimate Ruby's performance https://x.com/tobi/status/1728524453854756883?s=20

Well, when we say GitHub, we are talking about thousands of services. I don’t think we can pinpoint the overall operational failures to programming language choice. In my experience, these kind of issues are mostly caused by poor organizational architecture + poor project management. In GitHub’s case, I’m also confident to say the choice of infrastructure plays a much bigger role than Ruby.

[0] is a my favorite demonstration of it.

[0]: https://github.com/rails/rails/commit/b83965785db1eec019edf1...