25Design a canary that promotes or rolls back itself based on metrics, with no human in the loop.▼hardNewNetflixLinkedInUber◆ premiumThe loop is easy; the statistics are not. This question finds engineers who can size a traffic slice against sample noise and name the false rollback that kills trust in automation.Open full answer →
53A progressive rollout has been paused at 50 percent for two hours and nobody knows whether to promote or abort.▼hardNewGitLabAtlassianUber2 replies◆ premiumThe automation stopped because it could not decide, which is the correct behaviour and an incomplete design. Somebody has to decide, and the interesting question is what evidence that decision needs.Open full answer →
