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The Bridge to Agent-Scale Git Infrastructure
GitHub is redesigning its Git infrastructure to move from serialized writes to per-reference quorums, improving throughput during its Azure migration.
What: By decoupling Git operations from specific repository-wide locks, GitHub achieved 3–4x higher write performance, allowing them to scale reads and writes independently as AI agent activity increases.
Why it matters: Scaling git for the era of AI agents means moving away from traditional, monolithic repository locking toward high-concurrency, distributed metadata storage.
Original article
GitHub is replacing repository-wide write serialization with per-reference quorums to overcome cross-region latency during its Azure migration. Internal tests showed 3–4x higher throughput for writes to different references, while an object-storage-backed design allows read capacity to scale independently.
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