Spring Metrics histogram

If you want to use the nice histograms from spring, it does not work out of the box.

HistogramGauges.registerWithCommonFormat(timer, registry);

The actuator does activate a simple reporter, this seems to be the reporter that allows you to see all the meters over /actuator/metrics.

This does not however include the nice quantile functionality of histograms, timers and distribution summaries. I expected to see these quantiles after using the above method, but no...

For richer metric data it's thus better to use one of the third party solutions:
https://docs.spring.io/spring-boot/docs/current/reference/html/production-ready-metrics.html#production-ready-metrics-endpoint

Prometheus is the only one of these solutions that just exposes the metrics over /actuator/ to scrape (as a .yml), the rest of the dependencies require a separate metric db to be presented to push the data to.


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