REDESIGNING SOURCE CONTROL AT ANTHROPIC

Summary from the TLDR newsletter

Anthropic was being bottlenecked by developer infrastructure built for human scale, so it built an in-house version control system called Scion to support its next stage of growth, and fully migrated its monorepo from git in five months. It also built and shipped a code review surface, code search, a rich source control IAM system, novel ways of managing and landing large amounts of reviewed code, and more, all in that same time period. Anthropic averaged about 2,500 code changes merged per day in May. It now merges over 30,000 per day, and the rate of growth isn't expected to slow down anytime soon.