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Prometheus is an open source metric collection agent. Prometheus has a lot of different components, but at its heart is the pull based Prometheus server. Observe allows users to push into Prometheus by either an API endpoint or a Kubernetes Agent. Observe implements the Prometheus remote write API for both of these methods.

For more about Prometheus ingest, see the Prometheus forwarder documentation.

Additional notes

Prometheus timestamps support millisecond granularity.