Quick Answer
Metrics are numeric measurements over time. Key types: counter (monotonically increasing - total requests), gauge (current value - active connections, memory usage), histogram (distribution of values - request latency percentiles). Prometheus scrapes metrics from /metrics endpoints. Grafana visualizes. Alert when metrics cross thresholds (error rate > 1%, p99 latency > 500ms).
Answer
Metrics include CPU, memory, request rate, latency, error rate. Monitoring uses alerts and dashboards to detect anomalies. Tools: Prometheus, Grafana, Datadog.
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SugharaIQ Editorial Team
Verified Answer
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