Glossary
Silent failure
Also called: silent stop
Definition
A silent failure is when an agent stops working without producing any error, so its absence looks identical to a quiet day with nothing to report.
In practice
This is the most expensive failure mode in agent operations, and the reason is structural rather than technical. Every other failure announces itself: a bad answer is visible, a crash loop is visible, a large bill is visible eventually. An agent that quietly stopped last Thursday emits nothing at all, and you find out when you notice that the thing it was doing has not happened in a week. The fix is a heartbeat rather than better error handling. Record every scheduled run including the runs that found nothing, so a missing record becomes the alarm.
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Nearby terms
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