January 2018
Intermediate to advanced
336 pages
7h 56m
English
Content preview from Microservices with Clojure
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Publishing operational metrics
Operational metrics are useful to understand the usage and performance of the application by observing its runtime state as reported by the metrics. Pedestal provides a logging component that uses the Metrics library (http://metrics.dropwizard.io/3.2.3/) to publish the metrics to JMX (https://en.wikipedia.org/wiki/Java_Management_Extensions) by default via MetricRegistry (http://metrics.dropwizard.io/3.1.0/getting-started/#the-registry). The protocol implemented by Pedestal metrics is MetricRecorder, which can be implemented for custom metrics implementation. By default, MetricRecorder provides four types of recorders as shown in the following table:
| Metric recorder | Usage |
| Gauge | Used for the instantaneous ... |
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