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Install local jar with Maven

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1. The Problem and the options Maven is a very versatile tool and its available public repositories are second to none. However there will always be an artifact that is either not hosted anywhere, or the repository where it is hosted is risky to depend on, as it may not be up when you need it. When that happens, there ...

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ARM Virtualization – I/O Virtualization (Part 3)

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In the second part of the series we introduced memory management and interrupt handling support provided by virtualization hardware extensions. But effective virtualization solutions need to reach beyond the core to communicate with peripheral devices. In this post we discuss the various techniques used for virtualizing I/O, the problems faced, and the hardware solutions to mitigate these problems. The Difficulty ...

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Getting started with ElasticSearch

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A quick introduction to ElasticSearch, an open source, ditributed and RESTful search engine based on lucene, and how easily you can start working with it. Search Solution As mentioned in the earlier post, Choosing the right search solution for your site, feel free to analyze a best suited search solution for your requirements. In below section, we will cover further ...

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Requirements and Specifications

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As I was saying in my last blog, I’m preparing for a talk at Skills Matter entitled: “Business Analyst, Product Manager, Product Owner, Spy!” which I should just have entitled it “Requirements: Whose job are they anyway?” and so I’ve been giving a lot of thought to requirements. I finished the last blog entry noting that I was concerned the ...

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Package your classes by Feature and not by Layers

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Most of the enterprise Java applications share some similarities in their design. Mostly the packaging of these applications are driven by the framework used by them like Spring, EJBs or Hibernate etc. Alternatively you can group you packages by features. Like any other item regarding modeling this is not free from any issues. Lets discuss some trade-off and how get ...

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Understanding Dynamic Proxy: Spring AOP Basics

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Why AOP : To Understand AOP(Aspect Oriented Programming), we need to understand Cross Cutting Concerns in software development . In every project , there is some amount of code which gets repeated in multiple classes , across several modules.For example logging which needs to be done for almost all classes and for all module. This kind of code reduces code’s ...

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Google Guava Cache with regular expression patterns

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Quite recently I’ve seen a nice presentation about Google Guava and we came to the conclusion in our project that it could be really interesting to use the its Cache functionallity. Let us take a look at the regexp Pattern class and its compile function. Quite often in the code we can see that each time a regular expression is ...

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Groovy & Grails Understanding – Part2

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Grails Grails is a web framework based on Groovy and Java which can be deployed into existing Java web servers, e.g. Tomcat or Jetty. Its scaffolding capabilities let you create a new project within a few minutes. Grails is based on the “convention over configuration” idea which allows the application to auto-wires itself based on naming schemes (instead of using ...

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