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AI CURATED HOT STORY · 11/10/2026

Anthropic Rebuilds Source Control with Scion as Daily Merges Hit 30,000

1 reports archived1 independent sourcesupdated 11/10/2026, 11:21:27
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Anthropic migrated its monorepo from Git to Scion, an in-house server-side source control system built on content-addressed storage and tiered caching to serve agent and CI workloads. Daily merged changes grew from roughly 2,500 in May to over 30,000 in September, with CI performing about 25 million checkouts per day, outpacing shallow clones, sparse checkout and mirror-based Git workarounds. The design trades offline independence for less local data and shared infrastructure.

LATEST/Anthropic migrated its monorepo from Git to Scion, an in-house server-side source control system built on content-addressed storage and tiered caching to serve agent and CI workloads. Daily merged changes grew from roughly 2,500 in May to over 30,000 in September, with CI performing about 25 million checkouts per day, outpacing shallow clones, sparse checkout and mirror-based Git workarounds. The design trades offline independence for less local data and shared infrastructure.

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Total 1 reports · Latest first
  1. InfoQ 中文T2·78 pts

    Anthropic Rebuilds Source Control with Scion as Daily Merges Hit 30,000

    • Daily merged changes rose about 12x in four months, with ~25M CI checkouts per day and nearly 100GB of main-branch history
    • Scion moves commit, merge, rebase and blame operations server-side, leaving clients with a bounded object cache
    • Changesets reference compressed blobs via content-addressed pointers, and derived data can evolve without client changes
    • The trade-off is dependence on server availability and loss of offline independence, plus substantial integration work