 example, metric values and log entries) from Istio attributes</li><li>Creation of <em>handlers</em> (configured Mixer adapters) capable of processing generated <em>instances</em></li><li>Dispatch of <em>instances</em> to <em>handlers</em> according to a set of <em>rules</em></li></ol><h3 id="understanding-the-metrics-configuration">Understanding the metrics configuration</h3><p>The metrics configuration directs Mixer to send metric values to Prometheus. It uses three stanzas (or blocks) of configuration: <