Cockroach Labs CTO: AI ends manual code review — SkimNews
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- Peter Mattis, co-founder and CTO of Cockroach Labs and original GIMP creator with Spencer Kimball, initially turned down Sergey Brin's offer to join Google because of the hour-long commute from San Francisco to Mountain View
- Colossus, Google's successor to the Google File System, cut file storage overhead by 33% while increasing redundancy, pioneering Reed–Solomon erasure coding instead of keeping three full replicas
- CockroachDB requires at least three replicas for consensus by default (up to five for some system tables), and its design was shaped by Colossus's append-only architecture — which is why it uses the Pebble LSM engine Peter open-sourced in 2019, not B-trees
- Peter Mattis, a former C++ readability reviewer at Google, predicts AI agents will end manual code review 'in the same way we don't look at assembly anymore,' with reviewers giving 'less and less scrutiny' over time
- Cockroach Labs non-engineers — including the CFO and HR staff — built roughly 1,000 internal apps in a couple of months using an internal 'Lovable'-style platform the engineering org launched earlier this year
Why it matters: Peter's prediction that code review goes the way of assembly review is structural: if AI handles scrutiny, the bottleneck shifts from writing it to surrounding-applying it. The 1,000-apps-by-non-engineers figure suggests domain experts inside tech firms are now shipping software independently of engineering — a redistribution of where productivity gains land, not just an acceleration of them.
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