Who Broke Staging? How to Eliminate Staging Contention Forever
It's 4:17 PM on a Friday. You've been working on this feature for three days. The code is clean, the tests pass locally, and you're ready to ship. You push to staging and... nothing works. The API returns 500s. The database schema doesn't match. The feature flags are in some impossible state. You open Slack. Someone in-environment has already posted: "Hey, who deployed to staging? My tests are all failing now." Three other developers respond.