github.blog/engineering/architecture-optimization/the-bridge-to-agent-scale-git-infrastructure The bridge to agent-scale Git infrastructure
GitHub describes moving its busiest Git repositories into Azure by shifting its Spokes quorum from repository-wide to per-reference write serialization, which internal tests showed gave 3–4x higher throughput for writes to different references. It also introduces ephemeral virtual replicas backed by object storage to scale reads independently.
— via GitHub Engineering, Eleanor White
