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Hadoop Single Node Set Up

With this post I am hoping to share the procedure to set up Apache Hadoop in single node. Hadoop is used in dealing with Big Data sets where deployment is happening on low-cost commodity ...
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Database Encryption Using JPA Listeners

I recently had to add database encryption to a few fields and discovered a lot of bad advice out there. Architectural Issues The biggest problem is architectural. If your persistence ...
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Ten Things You Can Do With Spring Security

One You can specify the authorisation provider of your choice in your Spring XML config file. You do this by configuring an authentication-manager as defined in Spring’s http://www.springframework.org/schema/security/spring-security-3.1.xsd ...
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Java Heap Dump: Are you up to the task?

If you are as much enthusiasm as I am on Java performance, heap dump analysis should not be a mystery to you. If it is then the good news is that you have an opportunity to increase ...
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How to be Big Data-native?

Big data has spawned a set of tools that deliver results beyond the buzz. It has started delivering real insights for companies, which result in more effective decisions. When middleware ...
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Introduction To Git Concepts

This post is an introduction/reminder to Git concepts. It aims at facilitating the learning curve for those coming from a Subversion (or other) background. For more details, there ...
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Standalone web application with executable Tomcat

When it comes to deploying your application, simplicity is the biggest advantage. You’ll understand that especially when project evolves and needs some changes in the environment. ...
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Guava Preconditions Class

Anyone who’s written much Java has probably written methods that begin with conditionals that verify either the provided parameters or the state of the object being acted upon ...
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Guava Stopwatch

Guava‘s Stopwatch is another Guava class new to Guava Release 10 (as is Optional, the subject of another recent post). As its name implies, this simple class provides a method ...
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Database and Webapp Security

Threat Model This is a discussions on database and webapp security loosely based on the quick reference page on my site. That page is becoming unwieldy and does not make it easy for ...
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