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Test Attribute #10 – Isolation

This is last, final, and 10th entry in the ten commandments of test attributes that started here. And you should read all of them. We usually talk about isolation in terms of mocking. ...
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Java Concurrency Tutorial – Atomicity and race conditions

Atomicity is one of the key concepts in multi-threaded programs. We say a set of actions is atomic if they all execute as a single operation, in an indivisible manner. Taking for granted ...
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A Wonderful SQL Feature: Quantified Comparison Predicates (ANY, ALL)

Have you ever wondered about the use-case behind SQL’s ANY (also: SOME) and ALL keywords? You have probably not yet encountered these keywords in the wild. Yet they can be extremely ...
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The most important factor in software decay

Do you have big balls of mud? Here’s an experiment to amaze your friends. You probably listen to music on your phone via some sort of headset. The headset we shall consider here ...
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Autoboxing, Unboxing, and NoSuchMethodError

J2SE 5 introduced numerous features to the Java programming language. One of these features is autoboxing and unboxing, a feature that I use almost daily without even thinking about ...
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The Emergence of DevOps and the Fall of the Old Order

Software Engineering has always been dependent on IT operations to take care of the deployment of software to a production environment. In the various roles that I have been in, the ...
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Publish JAR artifact using Gradle to Artifactory

So I have wasted (invested) a day or two just to find out how to publish a JAR using Gradle to a locally running Artifactory server. I used Gradle Artifactory plugin to do the publishing. ...
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The dark side of Hibernate AUTO flush

Introduction Now that I described the the basics of JPA and Hibernate flush strategies, I can continue unraveling the surprising behavior of Hibernate’s AUTO flush mode. Not all queries ...
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Understanding volatile via example

We have spent last couple of months stabilizing the lock detection functionality in Plumbr. During this we have stumbled into many tricky concurrency issues. Many of the issues are ...
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JUnit in a Nutshell: Hello World

JUnit seems to be the most popular testing tool for developers within the Java world. So it is no wonder that there have been written some good books about this topic. But by earning ...
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