Watchdog
Noun · Slang & Abbreviations
Definitions
A process, service, or person that watches for problems and intervenes when something goes wrong. In engineering slang, watchdogs are the guardians that keep silent failures from staying silent too long.
In plain English: Something that monitors for trouble and acts when needed.
Example: "The watchdog restarted the worker pool after the health checks flatlined, buying the team time to investigate the deeper issue."