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Metrics we collect using Micrometer are also available for Prometheus (we create PrometheusMeterRegistry) and can be retrieved by the Spring Actuator endpoint your_host:your_port/actuator/prometheus

Method calls metrics can be requested from Prometheus by name service_method_calls, as you can see in the screenshot, each method has its own metric with a related Java service method name.
For metrics visualization we use Graphana and a specific dashboard (path: ops/grafana/application-dashboard-v2.json) where exists the method calls panel
{"serverDuration": 79, "requestCorrelationId": "6ee62d6406aad11b"}