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Oracle Coherence Best Practices for Session Management (Replication) in Clustered Application Servers Environment

Oracle Coherence is a in-memory data grid product, which is also being used commonly for Session Replication across cluster of application server nodes. It supports wide variety of application servers like WebLogic, WebSphere, Tom ...
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Searching made easy with Apache Lucene 4.3

Lucene is a Full Text Search Engine written in Java which can lend powerful search capabilities to any application. At heart of Lucene lies a file based Full Text Index. Lucene provides APIs to create this index and then add and d ...
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Java EE 7 launch – Feedback and Press Coverage

Java EE 7 is a couple of days old already. We all have had a chance to either watch the live launch events or the available replays. The last MR releases finished pushing their stuff to the JCP and it basically is a wrap. Time to ...
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Unit Testing Tip: Create Descriptive Tests

Your unit tests should be as descriptive as possible. The feedback they give you should be so clear you don’t even need to fire up the debugger and step one by one through the code to inspect your local variables. Why? Because t ...
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MOXy’s @XmlVariableNode – JSON Schema Example

We are in the process of adding the ability to generate a JSON Schema from your domain model to EclipseLink MOXy.  To accomplish this we have created a new Variable Node mapping. In this post I will demonstrate the new mapping by ...
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JMeter custom function implementation

JMeter provides functions that can be used in the sampler. While writing complex test-plan you feel that JMeter is lacking some of the methods. You use Beanshell script to define your own custom method. JMeter invokes Beanshell in ...
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Simple Spring Memcached – Spring Caching Abstraction and Memcached

Caching remains the one of the most basic performance enhancing mechanism in any read heavy database application. Spring 3.1 release came up with a cool new feature called Cache Abstraction. Spring Cache Abstraction provides ...
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Transactional Lucene

Many users don’t appreciate the transactional semantics of Lucene’s APIs and how this can be useful in search applications. For starters, Lucene implements ACID properties:Atomicity: when you make changes (adding, re ...
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JPA 2 | Dynamic Queries Vs Named Queries

JPA has its own Query language called JPQL. JPQL is very similar to SQL, with one major difference being that JPQL works with entities as defined in the application whereas SQL works with table and column names as defined in the d ...
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Mockito – Extra Interfaces with annotations and static methods

In the code I have quite recently came across a really bad piece of code that based on class casting in terms of performing some actions on objects. Of course the code needed to be refactored but sometimes you can’t do it / ...
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