Inside GitHub’s new Git storage architecture

GitHub announced its new Git storage architecture at GitHub Universe, designed to handle thousands of writes per second with scaled reads on demand. The architecture aims to support agentic development for millions of developers by minimizing coordination and decoupling storage from compute, allowing for increased efficiency and reliability. A detailed overview is provided on the principles behind the architecture, the new components including the Ref-CAS service, and future improvements planned. This shift is significant for maintaining performance amid growing repository demands and makes GitHub better equipped to handle agent-driven development.