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Judgment & ambiguity · When to act

Error rates on a new release climb from 0.1% to 0.4% over twenty minutes — well under your alert threshold, but the slope is steady and the deploy touched the checkout path. Do you roll back now or keep watching?

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I roll back now. The absolute rate is low, but three things stack: a steady positive slope, blast radius on checkout where errors are revenue, and a deploy I can attribute it to. R…

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