Jconsole on Micha Kops' Tech Notes

Snippet: Java Mission Control (JMC) and Flight Recorder (JFR)

Wed, 11 Oct 2017 00:00:00 +0200

The Java Mission Control and the Java Flight Recorder allow us to capture run-time information from our Java applications without much overhead and aggregate profiling information.

I have written down the commands that I’m using the most when profiling a Java application with this tool chain in the following article.

Figure 1. Java Mission Control - Report

Running Java Mission Control (JMC)

We may start the JMC user interface shown above using the jmc command that is shipped with Oracle’s JRockit or Java (since Java 7 update 40).

Dynamic Configuration Management with Netflix Archaius and Apache ZooKeeper, Property-Files, JMX

Wed, 13 Apr 2016 00:00:00 +0200

Though having written about other configuration management libraries for Java before, I would like to demonstrate another one today: Netflix Archaius.

Archaius offers some nice features like dynamic typed properties, thread-safe operations, an event system for property changes/updates, a JMX MBean to read and update properties and adaptors for a variety of dynamic configuration sources like Amazon DynamoDB, JDBC, URLs and Apache ZooKeeper.

In the following tutorial I’d like to demonstrate how to read and update application configuration properties with Archaius and data sources like property-files, system-properties, JMX and Apache ZooKeeper.

Java EE 7 JMX Reports with Yammer Metrics

Tue, 26 Aug 2014 00:00:00 +0200

There are several ways to aggregate and report application performance indicators in a Java application. One common way here is to use Java Management Extensions (JMX) and MBeans.

The Yammer Metrics Library eases this task for us and simplifies the aggregation of different reports.

In the following tutorial, we’re going to set up a full Java EE 7 web application by the help of Maven archetypes and we’re running the application on WildFly application server that is downloaded and configured completely by the WildFly Maven Plugin.