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Running Java Mission Control and Flight Recorder against WildFly and EAP

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Java Mission Control (JMC) enables you to monitor and manage Java applications without introducing the performance overhead normally associated with these types of tools. It uses data which is already getting collected for normal dynamic optimization of the JVM resulting in a very lightweight approach to observe and analyze problems in the application code. The JMC consists of three different types ...

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Thread local storage in Java

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One of the rarely known features among developers is Thread-local storage.  The idea is simple and need for it comes in  scenarios where we need data that is … well local for the thread. If we have two threads we that refer to the same global variable but we wanna them to have separate value independently initialized of each other. ...

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How and Why is Unsafe used in Java?

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Overview sun.misc.Unsafe has been in Java from at least as far back as Java 1.4 (2004). In Java 9, Unsafe will be hidden along with many other, for-internal-use classes. to improve the maintainability of the JVM. While it is still unclear exactly what will replace Unsafe, and I suspect it will be more than one thing which replaces it, it raises the ...

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Lightweight Integration with Java EE and Camel

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Enterprise Java has different flavors and perspectives. Starting at the plain platform technology, which is well known as Java EE over to different frameworks and integration aspects and finally use-cases which involve data-centric user interfaces or specific visualizations. The most prominent problem which isn’t solved by Java EE itself is “integration”. There are plenty of products out there from well ...

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Why Technical Resumes Need a Profile (because we’re dumb)

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There is significant variation in résumé format across candidates. Name and contact information is always on top, but on any given day a recruiter might see the next section as Education, Skills, Experience, or even (gasp) an Objective. Career length influences which section comes first. Entry-level candidates usually choose Education, while veteran candidates gravitate towards experience and accomplishments. Unfortunately, going from a glance at contact information to dissecting intimate ...

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Use Cases for Elasticsearch: Analytics

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In the last post in this series we have seen how we can use Logstash, Elasticsearch and Kibana for doing logfile analytics. This week we will look at the general capabilities for doing analytics on any data using Elasticsearch and Kibana. Use Case We have already seen that Elasticsearch can be used to store large amounts of data. Instead of ...

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Updates on CDI 2.0

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CDI 2.0 is the next version of Contexts and Dependency Injection for the Java EE Platform and a candidate for inclusion in Java EE 8. It is being worked upon since September 2014 and moving pretty rapidly !                 Major goals for CDI 2.0 Alignment with Java SE 8 (of course!) Support for ...

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Really Too Bad that Java 8 Doesn’t Have Iterable.stream()

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This is one of the more interesting recent Stack Overflow questions: Why does Iterable not provide stream() and parallelStream() methods? At first, it might seem intuitive to make it straight-forward to convert an Iterable into a Stream, because the two are really more or less the same thing for 90% of all use-cases. Granted, the expert group had a strong ...

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The New Agile – Certifications

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Last time we looked at how things came to be. How things converged around a group of software developers in a ski resort: There were actual experiments in the field with reported successes. There was a funnel for communication to spread those ideas. And now there was a joint vision and a name. The agile manifesto would still remain a ...

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