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Plug into the Wall: Interfaces to the Outside World

Just to be clear, this article isn’t about interfacing with hardware, though what it says does apply a little bit. You’ve Heard It Before You’ve probably heard it quite a bit, ...
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The Pool–An Agile Fable

Once upon a time there was a pool. It was in a club, and the club people loved the pool. This pool had 6 lanes. Each lane was wide enough for 2 persons to swim in parallel. Because ...
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Top 10 Easy Performance Optimisations in Java

There has been a lot of hype about the buzzword “web scale“, and people are going through lengths of reorganising their application architecture to get their systems to “scale”. But ...
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Java EE 7 and WildFly on Kubernetes using Vagrant

This tip will show how to run a Java EE 7 application deployed in WildFly and hosted using Kubernetes and Docker. If you want to learn more about the basics, then this blog has already ...
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Top 10 Most Common Java Performance Problems

Java performance is an issue of interest for all Java application developers, since making an application fast is as important as making it functional. Steven Haines uses his personal ...
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Apache Cassandra and Low-Latency Applications

Introduction Over the years, Grid Dynamics has had many projects related to NoSQL, particularly Apache Cassandra. In this post, we want to discuss a project which brought exciting challenges ...
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How JVMTI tagging can affect GC pauses

This post is analyzing why and how Plumbr Agents extended the length of GC pauses on certain occasions. Troubleshooting the underlying problem revealed interesting insights about ...
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Codename One Charts

This post was written by Steve Hannah, one of the newest additions to the Codename One team and a long time community contributor. The upcoming update to Codename One will include a ...
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Do not unit test bugs

Before getting to the topic of the title let’s have a simple programming sample. On the programming task I will demonstrate some bad coding style and based on that it will be easier ...
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Inconsistent operation widen rules in Java

Overview When you perform a unary or binary operation in Java the standard behaviour is to use the widest operand (or a wider one for byte, short and char).  This is simple to understand ...
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