prometheus jvm client

We have hosted the application prometheus jvm client in order to run this application in our online workstations with Wine or directly.

Quick description about prometheus jvm client:

It supports Java, Clojure, Scala, JRuby, and anything else that runs on the JVM. If you use Maven, you can simply reference the assets below. The latest version can be found on in the maven repository for io.prometheus. By default, counters, histograms, and summaries export an additional series suffixed with _created and a value of the unix timestamp for when the metric was created. Building the repository needs Java 11 (The project the project still supports Java 6 and Java versions > 11 dropped support for Java 6 output). We recommend to use an up-to-data Java 8 installation. The project provides the maven wrapper and therefore no local maven installation is needed. To build the repository just call ./mvnw verify.

Features:

• Counters go up, and reset when the process restarts
• Gauges can go up and down
• Summaries and Histograms can both be used to monitor distributions, like latencies or request sizes
• The Summary class provides different utility methods for observing values, like observe(double), startTimer(); timer.observeDuration(), time(Callable)
• Tracking exact quantiles require a large amount of memory, because all observations need to be stored in a sorted list
• Like Summaries, Histograms can be used to monitor latencies (or other things like request sizes)

Programming Language: Java.
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