Reason Machines 开源 Aspen 支持每秒 567 次推送
Reason Machines 开源了面向多智能体并发推送场景的 Git 服务器 Aspen，核心思路是放弃单一仓库队列，把每个分支建模为一行 Postgres 记录并用单次 compare-and-swap 更新，使不同分支的推送互不阻塞。团队自测在单台 8 核服务器配 S3 Standard 时持续 5 分钟达到每秒 567 次推送，中位延迟 208 ms、p99 314 ms，但主分支合并仍只有约每秒 4 次，24 小时混沌测试在 11.59 小时中断。
报道正文
▲ Marktechpost AI · 2026-11-09 08
▲ Reason Machines just open-sourced Aspen, a Git server built for repos that hundreds of AI agents push to at once.
The key idea is to stop ordering every push through one repository queue. Each branch is one Postgres row moved by a single compare-and-swap, so pushes to different branches never wait. Packs are stored as pushed in object storage and reused on fetch, so nothing is recompressed per client.
In the team's own test, Aspen sustained 567 pushes per second for 5 minutes on one 8-core server with S3 Standard. Median push was 208 ms and p99 was 314 ms. Cursor publishes 120/s for Origin on S3 Standard, on a different, replicated setup. It is a trade-off though: landing on main still runs at about 4 per second, and the 24-hour chaos run stopped at 11.59 clean hours.
Full analysis:
