Why Google Stores Billions of Lines of Code in a Single Repository (2016) [pdf]

Previous discussion:

https://news.ycombinator.com/item?id=11991479

https://news.ycombinator.com/item?id=15889148

https://news.ycombinator.com/item?id=17605371

https://news.ycombinator.com/item?id=22019827