What Is a Rollout Health Gate?
A rollout health gate is a checkpoint during a progressive deployment that evaluates live signals like error rate and latency against thresholds. If the new version looks unhealthy, the gate stops the rollout from advancing or triggers a rollback. It guards the path from a small exposure to full traffic.
Why it matters
A regression that escapes pre-release testing can still surface under real traffic. A health gate catches it while only a fraction of users are affected.
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