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Publish and Subscribe with Hazelcast

A few weeks ago I wrote a blog on getting started with Hazelcast describing how ludicrously simple it is to create distributed maps, lists and queues. At the time I mentioned that Hazelcast ...
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Want to get faster with AtomicLong? Make it wait.

I often hear that Java atomic types (java.util.concurrent.atomic) are super-fast and play nicely with highly concurrent code. Most of the time, atomics do their job in a robust and ...
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How to serialize an array of doubles with a byte (binary delta encoding for low-varianced monotonic sets of floating point data)

Low latency systems require high performance message processing and passing. As in most cases data has to be transfered over the wire or serialised for persistence, encoding and decoding ...
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Using Google GSON : Extra Goodies : Part II

We continue with Using GSON from last article, also in case you missed the first article in series here is link. So, here we go with another installment in series. Versioning Support If ...
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How to configure an SSL Certificate with Play Framework for https

I spent hours try­ing to get this to work, and in the end, then prob­lem was that I did not gen­er­ate the CSR (Cer­tifi­cate Request) myself with the keytool. I kept get­ting ...
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Spring XD 1.0.0.M5 is here!

Spring XD announces the Spring XD 1.0.0.Milestone 5 release. You can download it from here. According to Spring XD 1.0.0.M5 Released, Spring XD is a unified, distributed, and extensible ...
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Identifying Gradle Conventions

Configuration by convention has many advantages, especially in terms of conciseness because developers do not need to explicitly configure things that are implicitly configured through ...
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The Decorator Pattern

The Decorator Pattern One design pattern that I don’t see being used very often is Decorator. I’m not sure why this pattern isn’t more popular, as it’s quite handy. The Decorator ...
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Check your REST parameters!

I was doing research related to my ongoing “project student” series and realized that I had made one of the most common – and most easily remedied – mistakes. I wasn’t using ...
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Upgrading to Java 7 on Google’s AppEngine

If you are still running a Java 6 application on Google AppEngine, you’re about to get into serious trouble. Any moment now, the AppEngine team is going to release version 1.8.9, ...
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