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TILDraft2025-06-02

TIL: alert fatigue is a design problem

A short note on why deleting alerts often improves reliability more than tuning thresholds.

Topics
  • SRE
  • Alerting
  • SLOs
Tags
  • til
  • alerting
  • slos
  • reliability

The symptom

A team had 120 active alert rules and a 40% false-positive rate. They asked for help tuning thresholds. The real fix was removing alerts that did not map to a user-impacting symptom.

The rule

Every alert must answer: what symptom is this protecting, who is impacted, and what is the expected first action? If any answer is missing, the alert is a candidate for deletion.

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