A staged rollout you control on one store and not on the others
Four channels, four halt latencies, and only one of them is under your hand.
deployment
2 posts
One version, four numbering schemes, and a release that could not be rolled back
A monotonic integer, a build string, a semantic version and a cache-busting hash have to agree. Deriving all four from one source is the only shape that survives a hotfix.