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Scalable Counters For Multi Core

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Counters are required everywhere , for e.g. to find key KPI of application, load on application, total number of request served, some KPI for finding throughput of application & many more. With all these requirement complexity of concurrency is also added & that makes this problem interesting. How to implement concurrent counter     Synchronized – This was the only ...

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Funny Video – Java vs. .NET parody

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Hello fellow geeks, As you might have noticed, we are quite keen on humour here at Java Code Geeks. We believe that a break for some good laughs goes a long way and thus it is always welcome. For that reason, we have featured in the past a list of funny source code comments and some short videos depicting the ...

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Three exciting Lucene features in one day

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Yesterday was a productive day: suddenly, there are three exciting new features coming to Lucene. Expressions module The first feature, committed yesterday, is the new expressions module. This allows you to define a dynamic field for sorting, using an arbitrary String expression. There is builtin support for parsing JavaScript, but the parser is pluggable if you want to create your ...

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MongoDB and Web applications

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Today’s era is when data grows at very huge scale. Data storage is not a problem, yes but the way it gets structured and stored may increase or decrease the seek time for needed data blocks. Use Cases of ever increasing unstructured data           Facebook: 750 million users are active , 1 in 3 Internet users ...

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Spring Integration: A lightweight integration Approach

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Today’s application expects access of all business in enterprise environment regardless of application technologies, which require, seamless integration with desperate systems. This integration can be achieved through wiring of desperate systems using Middleware technologies. Integration platform enables environment for applications to share information with each other to make architecture high interoperable. Spring Integration provides a mediation framework to build lightweight ...

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Scala setup on Mac OS

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Not so long time ago I decide to improve my programming skills with a new programming language. As you can see looking on the topic, the new language is Scala. I don’t want to write a lot of paragraphs about Scala advantages which were crucial in my decision. Learning of any programming language starts from setting up of environment. In ...

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The Real Cost of Change in Software Development

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There are two widely opposed (and often misunderstood) positions on how expensive it can be to change or fix software once it has been designed, coded, tested and implemented. One holds that it is extremely expensive to leave changes until late, that the cost of change rises exponentially. The other position is that changes should be left as late as ...

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Scala Wonderland: Lists

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In functional style methods should not have side effects. A consequence of this philosophy is that List is immutable in Scala. Construction of a List is simple.                   val abc = List("a", "b", "c") There is one trick in the previous code. A common trick in Scala. It invokes method named apply ...

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