buildConfirmed5 publishers Anthropic built a new source-control system, Scion, after daily merges rose from about 2,500 in May 2026 to over 30,000 in September. A dev.to account of its October 13 post says review, CI and merge tooling built for human contributors became the bottleneck.
Perspective Coverage
5 publishers
- Builder
- Builder 48%
- Operator
- Operator 37%
- Investor
- Investor 15%
Reality
- Evidence58
- Adoption
- Not scored
- Hype gap+14
- Incentives55
- Confidence68
buildOne report1 publisher Uber's SubmitQueue tests pending changes against each other to keep six monorepos green
Uber's SubmitQueue builds a speculation tree of pending changes to keep mainline green in monorepos that take more than 65,000 changes a month. At that volume, a one-at-a-time queue would need every build done in about 40 seconds.
Reality
- Evidence40
- Adoption30
- Hype gap+20
- Incentives45
- Confidence55
buildConfirmed2 publishers Git 2.56.0 ships a merge-base stopping rule that GitHub measured at around 70 times faster in many cases on one large monorepo. Whether a build fleet sees gains like that depends on its repositories having old side branches merged into long histories.
Reality
- Evidence62
- Adoption
- Not scored
- Hype gap+15
- Incentives55
- Confidence66
buildOne report1 publisher A single CLAUDE.md anywhere up the tree cancels Claude Code's new AGENTS.md support
Claude Code started reading AGENTS.md on September 18, but only where no CLAUDE.md sits in the working directory or any parent above it. Monorepos need a stub file per package or a change to the instructionFiles setting.
Reality
- Evidence55
- Adoption40
- Hype gap+10
- Incentives35
- Confidence55
buildOne report1 publisher Adding Git replicas made Datadog's CI fetches slower because every write went to all of them
The mirror Datadog put in front of its GitLab backend now takes over 100 million requests a week at a 40 ms median. The number that explains the rebuild is the several seconds of server CPU one monorepo fetch costs.
Publishers:datadoghq.com
Reality
- Evidence45
- Adoption40
- Hype gap+20
- Incentives60
- Confidence55