Building Git infrastructure for agent-scale development

GitHub is rebuilding its Git infrastructure to accommodate agentic software development, which is rapidly increasing the volume and concurrency of commits, pushes, merges, CI activity, and repository reads. Between September 2025 and August 2026, monthly Git activity more than doubled to 473.3 billion events, while some repositories reached roughly a billion requests per month and September recorded 7.38 billion commits. GitHub’s existing Spokes architecture stores several full local-disk replicas per repository, providing consistency and redundancy but coupling read scaling to write overhead because every replica participates in pushes. The new design aims to separate durable storage from compute, use Azure Blob Storage as the authoritative repository-data layer, and employ lightweight caching workers that can independently scale read capacity. It will also reduce coordination on pushes to essential reference updates, move maintenance tasks such as compaction and garbage collection off live serving hosts, and preserve established workflows, governance controls, reliability, auditability, and human oversight. Internal benchmarks indicate up to 35 times greater write throughput, with the redesign intended to improve resilience and performance for both the busiest enterprise and agent-driven repositories and ordinary users.

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