Agents need throwaway DB copies, not mocks — copy-on-write cloning may become default infra
petrusenko_max · x · 2026-11-16
Letting agents touch real data unsupervised calls for throwaway copies of the database, not mocks. Copy-on-write cloning creates resettable branches in seconds, eliminating failure classes only visible on real data shapes. The linked db-branch project implements instant MySQL branches on ZFS clones, clustered across VMs with ProxySQL routing. The author predicts this will drive copy-on-write into default infrastructure.
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