Java Architect Handbook
Jul 2, 2026 · Industry Insights
Why Facebook Dropped Git for Mercurial: Performance and Community Factors
Facebook originally used Git but switched to Mercurial around 2012 because its massive monolithic repository caused severe performance bottlenecks, especially during file stat operations, and Git’s maintainers were unwilling to improve scalability, leading the team to evaluate alternatives like Perforce before adopting Mercurial’s clearer architecture and collaborative community.
FacebookGitMercurial
0 likes · 13 min read