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Writing Acceptance Tests for Openshift + MongoDb Applications

Acceptance testing are used to determine if the requirements of a specification are met. It should be run in an environment as similar as possible of the production one. So if your ...
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Java Management Extensions

What is JMX? The Java Management Extensions (JMX) is an API used for managing or monitoring various resources such as applications, devices, services and of course the JVM. Developed ...
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JAX-RS Bean Validation Error Message Internationalization

Introduction to Bean Validation JavaBeans Validation (Bean Validation) is a new validation model available as part of Java EE 6 platform. The Bean Validation model is supported by constraints ...
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Who is stealing your memory? The Application Servers Edition

You create an amazing app. You put it into production. And you notice that you justdo not have enough memory available. Even when all your measurements (maybe taken with the help of ...
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Guava Splitter vs StringUtils

So I recently wrote a post about good old reliable Apache Commons StringUtils, which provoked a couple of comments, one of which was that Google Guava provides better mechanisms for ...
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JBoss BRMS Best Practices – tips for your BPM Process Initialization Layer

I have posted some articles in the past on migration strategies, taken closer looks at process layers and provided some best practices for jBPM, both touching on very specific parts ...
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Google Guava BloomFilter

When the Guava project released version 11.0, one of the new additions was the BloomFilter class. A BloomFilter is a unique data-structure used to indicate if an element is contained ...
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Busting PermGen Myths

In my latest post I explained the reasons that can cause the java.lang.OutOfMemoryError: PermGen space crashes. Now it is time to talk about possible solutions to the problem. Or, ...
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TaskletStep Oriented Processing in Spring Batch

Many enterprise applications require batch processing to process billions of transactions every day. These big transaction sets have to be processed without performance problems. Spring ...
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ActiveMQ: Understanding Memory Usage

As indicated by some recent mailing list emails and a lot of info returned from Google, ActiveMQ’s SystemUsage and particularly the MemoryUsage functionality has left some people ...
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