Metrics & Infrastructure
Slow Drift
Updated Jul 28, 2026 · 1d ago
The boiling-frog leak: a metric trending steadily the wrong way over hours, too gradual for any spike alarm to catch.
Example alert
Exact wording varies — the detector generates titles from the anomaly it finds. This is representative of what an alert looks like when it fires.
How it works
Applies a Mann-Kendall monotonic-trend test over a long window per metric series, detecting sustained directional drift (a slow memory leak, a filling disk) that never trips a threshold because no single point is anomalous. Direction-aware via metric polarity.
Availability
Runs on these tiers:
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Open alerts in the sandbox →Related detectors
- Metric Anomaly
Spikes and dips in any numeric metric — CPU, memory, queue depth, request rate — against that metric's own seasonal baseline.
- Resource Saturation
A resource pinned near its limit — CPU, memory, disk, connection pool — long enough to matter, not a momentary touch.
- Metric Reporting Gap
A metric series that simply stopped arriving — a dead exporter, a broken scrape, a crashed agent — where the absence is the alert.
- Infrastructure Metric Rules
Named-metric guardrails: pods stuck Pending, consumer-group lag, replication lag, restart storms — metrics with a known-bad level.
- Host Liveness
Flags a host or node that has stopped reporting, so a silent box surfaces as a warning rather than as missing data.