How We Made GitHub Fast. Detailed overview of the new GitHub architecture. It’s a lot more complicated than I would have expected—lots of moving parts are involved in ensuring they can scale horizontally when they need to. Interesting components include nginx, Unicorn, Rails, DRBD, HAProxy, Redis, Erlang, memcached, SSH, git and a bunch of interesting new open source projects produced by the GitHub team such as BERT/Ernie and ProxyMachine.
Recent articles
- Vibe engineering - 7th October 2025
- OpenAI DevDay 2025 live blog - 6th October 2025
- Embracing the parallel coding agent lifestyle - 5th October 2025