Cursor Uses S3 WAL to Scale Git Storage to More than 300 Pushes per Second

Cursor rebuilt Git hosting so that S3 is the source of truth and the local NVMe repos are just warm caches. Continuity keeps a write-ahead log in object storage and lets any node accept a push with a compare-and-swap: over 300 pushes/second on S3 Express One Zone, conditional reads under 10ms. Moving the consistency boundary into S3 removes exactly the coordination Spokes’ three-phase commit pays for. Numbers are Cursor’s own, mind you.