delta

How it works

Detects divergence from a recent moving average. It uses an Exponential Moving Average (EMA) to establish a baseline; sudden shifts away from this trend trigger the breaker even if absolute thresholds are not met.

When to use

• Early warning for rapid service degradation.
• Catching spikes where a fixed threshold is too high to be useful.
• Monitoring metrics that drift naturally but should not shift abruptly.

When not to use

• Highly volatile metrics with frequent natural jumps.

State explanations