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Spring JpaRepository Example (In-Memory)

This post describes a simple Spring JpaRepository example using an in memory HSQL database. The code example is available from GitHub in the Spring-JpaRepository directory. It is based ...
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SuperMan bound by Java Monitors

Its a dark time in the life of Super Man. Jor-El wants him to go on a voyage to prepare him for his ultimate destiny. Yet the Earth is faced with dooms-day and the Justice League needs ...
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How Hadoop Works? HDFS case study

The Apache Hadoop software library is a framework that allows for the distributed processing of large data sets across clusters of computers using simple programming models. It is designed ...
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Install, setup and start MongoDB on Windows

This post will provide the full path from downloading required binary archive/package for particular Windows version to starting up MongoDB in various ways. Following are the high ...
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There is no application server

We have recently posted data about application server market share we gathered from the free Plumbr deployments. And it resonated well – via different channels we got hundreds of ...
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How deep is your code?

Dependency tuples. Picture your code. Picture all those functions on which there are no source-code dependencies. That might sound odd: if there are no source-code dependencies on a ...
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JavaEE 7 with GlassFish on Eclipse Juno

Java EE 7 is hot. The first four JSRs passed the final approval ballot recently and GlassFish 4 reached promoted build 83 in the meantime. If you are following my blog you know, that ...
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WatchService combined with Akka actors

WatchService is a handy class that can notify you about any file system changes (create/update/delete of file) in a given set of directories. It is described nicely in the official ...
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Spring Java Configuration

I have found that a lot of Spring developers I know still do not know about or use Spring Java Configuration (aka JavaConfig). Spring 3.0 introduced this feature which allows Spring ...
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Release of Disruptor 3.0.0

I’ve decided that I’m a bit bored of the whole putting a beta tag on various versions of the Disruptor so I’ve decide to send forth Disruptor 3.0.0 into the world. ...
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