The trigger is the configured absolute percentage-point increase, not statistical significance. A decision requires traffic in both groups.
Change rehearsal / Release engineer
Canary Error Gap
Compare failure rates of a canary cohort and its concurrent control.
01 / Inputs
Working sheet
Edit any cell to recalculate. Use anonymous references. Data stays in this browser tab and clears when you reload.
| Feature | Test requests | Test errors | Control requests | Control errors | Trigger pp | Row |
|---|
02 / Review
Decision sheet
| Feature | Canary | Control | Gap pp | Action |
|---|---|---|---|---|
| Search | 4% | 1% | 3 | Pause |
| Export | 0% | 0.83% | -0.83 | Observe |
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