Alerts

Watch a metric and get notified when it moves. Alerts evaluate on a schedule and deliver on breach (cooldown-suppressed unless severity escalates).

Methods

• Threshold — compare against a fixed value.
• Percent change — versus a point N days prior (e.g. week-over-week).
• Z-score — rolling-window outlier detection.
• Seasonal — residual versus a day-of-week / week-of-year baseline.