The Monorepo Breaking Point: How Uber Solved Extreme Engineering Scale

Uber's Go monorepo with 3,000+ microservices and 1,000+ daily commits represents an unprecedented engineering challenge where a single change can impact thousands of services simultaneously. This case study reveals critical systemic failures that emerge when monorepo tooling and processes fail to scale, providing essential insights for engineering leaders managing complex codebases. The practical solutions Uber developed offer actionable strategies for any organization scaling monorepo architecture beyond traditional limits.