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MapReduce Algorithms – Order Inversion

This post is another segment in the series presenting MapReduce algorithms as found in the Data-Intensive Text Processing with MapReduce book. Previous installments are Local Aggregation, ...
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Authentication against a RESTful Service with Spring Security

1. Overview This article is focused on how to authenticate against a secure REST API that provides security services – mainly, a RESTful User Account and Authentication Service. 2. ...
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Google Guava BiMaps

Next up on my tour of Guava, is the BiMap, another useful collection type. It’s pretty simple really, a BiMap is simply a two way map. Inverting a Map A normal java map is a set ...
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Using Builder Pattern in JUnit tests

This is not intended to be a heavily technical post. The goal of this post is to give you some guidelines to make your JUnit testing life more easy, to enable you to write complex scenarios ...
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Getting started with Apache Camel

In a previous blog-post we got to know about enterprise integration patterns (EIPs). Now in this post we will look into Apache Camel framework that realizes those patterns.                 About ...
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Securing your Tomcat app with SSL and Spring Security

If you’ve seen my last blog, you’ll know that I listed ten things that you can do with Spring Security. However, before you start using Spring Security in earnest one of ...
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A Guide To Authenticating Users With Mozilla Persona

Having only twitter and facebook authentication so far, I decided to add Mozilla Persona to the list for my latest project (computoser, computer-generated music). Why?                I ...
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Hazelcast Distributed Execution with Spring

The ExecutorService feature had come with Java 5 and is under java.util.concurrent package. It extends the Executor interface and provides a thread pool functionality to execute asynchronous ...
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From XaaS to Java EE – Which damn cloud is right for me in 2012?

Have you ever wondered what it takes to get your Java EE up and running somewhere? I did. For years. Started with hosting my own, moved on to some hosting offerings and finally stumbled ...
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Spring’s Web MVC – Redirect to the Memory Leak

They say that one rock can cause an avalanche. Lately, one of my Colleagues, Marcin Radoszewski, gave me such a rock. You’ll probably never guess what it is, but there is a chance, ...
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