Sometimes the best way to cope with scale is to keep things simple and do everything you can to avoid it. This is the approach that GitHub, the repository service for the popular Git source version control tool created by Linus Torvalds a decade ago, has taken as it has grown explosively and become one of the centers of gravity for open source software development.
Programmers are understandably picky about the tools they use to craft their code and share it with others so they, in turn, can also tweak and improve it. In a very real sense, software developers live in these systems and the way source version control systems work can either help or hinder the creative process of collaborators.