The instances are handed to Mixer adapters for processing and backend storage.</li><li>The backend storage systems record metrics data.</li></ol><p>The default installations of Mixer ship with a <a href="http://prometheus.io/">Prometheus</a> adapter, as well as configuration for generating a basic set of metric values and sending them to the Prometheus adapter. The <a href="/v0.2/docs/tasks/telemetry/querying-metrics.html#about-the-prometheus-add-on">Prometheus add-on</a> also supplies configuration for an 