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I'm new to Java. While exploring the ways of monitoring Cassandra, I found out(https://cassandra.apache.org/doc/latest/operating/metrics.html) that "Metrics in Cassandra are managed using the Dropwizard Metrics library". However, at several places I've read about Codahale Metrics which has got me confused regarding the difference/relationship between the two. Are these different libraries doing the same thing or is it that what's called as dropwizard metrics used to be called as Codahale Metrics earlier?
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Metrics is a Java library which gives you unparalleled insight into what your code does in production. Metrics provides a powerful toolkit of ways to measure the behavior of critical components in your production environment.
Dropwizard is an open source Java framework for developing ops-friendly, high-performance RESTful backends. It was developed by Yammer to power their JVM based backend. Dropwizard provides best-of-breed Java libraries into one embedded application package.
Web MVC and Annotation-Based WebFlux The interceptors need to be enabled for every request handler or controller that you want to time. Add @Timed to: A controller class to enable timings on every request handler in the controller.
"m1_rate": the event rate for the last one minute. "m5_rate": the event rate for the last five minutes. "m15_rate": the event rate for the last fifteen minutes.
The Metrics library have changed its package naming with versions as its changed hands in ownership a bit
yammer->codahale->dropwizard
They are all same library but dropwizard is the more up to date version
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