Skip to main content
← All PostsTag

#Zero-Downtime

Every post I've written about Zero-Downtime — 1 article, across Databases. Most recent: “Three Phases of Online Data Movement, Read as Three Invariants.”

Posts tagged #Zero-Downtime

Databases01

Three Phases of Online Data Movement, Read as Three Invariants

Every online migration diagram I have seen looks the same — three arrows between two boxes — and skips the part that matters: what each phase is actually for. These are my notes after re-reading Stripe's DocDB writeups against the gh-ost and Vitess cutover docs, distilled into three invariants I can graph and gate.

Jul 29