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Design the rollout of a new model version so that neither quality nor latency regresses in production. How do you know when to promote?

A canary is only as good as the number of requests behind each verdict. The answer sizes the canary from the statistics of the regression it must catch, then stages the rollout around that number.

Updated Oct 2026 · Worked answers on inference mechanisms, with calculations, implementation details, and follow-up questions.

A canary is only as good as the number of requests behind each verdict. The answer sizes the canary from the statistics of the regression it must catch, then stages the rollout around that number.

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