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Metrics, Traces, and API Priority and Fairness

Logs are for discrete events; metrics are for continuous measurements. This article inspects the Prometheus-format /metrics endpoint the apiserver and kubelet expose, then digs into API Priority and Fairness — the apiserver's mechanism for splitting request bandwidth into priority levels so one misbehaving client can't starve the rest. We look at the built-in FlowSchema and PriorityLevelConfiguration, and each level's live state via the debug endpoint.