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MongoDB Primary Keys Are Your Friend

All documents in a MongoDB collection have a primary key dubbed _id. This field is automatically assigned to a document upon insert, so there’s rarely a need to provide it. What’s ...
java-interview-questions-answers

Blog Categorisation using Encog, ROME, JSoup and Google Guava

Continuing with Programming Collection Intelligence  (PCI) the next exercise was using the distance scores to pigeonhole a list of blogs based on the words used within the relevant ...
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Screaming fast Lucene searches using C++ via JNI

At the end of the day, when Lucene executes a query, after the initial setup the true hot-spot is usually rather basic code that decodes sequential blocks of integer docIDs, term frequencies ...
spring-interview-questions-answers

Spring MVC Error handling flow

There are broadly three ways of handling an exception flow using Spring MVC, the objective being to intercept any application exception and present a friendly and informative view back ...
java-interview-questions-answers

Working with Amazon Simple Queue Service using java

Amazon Simple Queue Service or SQS is a highly scalable hosted messaging queue provided by Amazon Webservice stack. Amazon SQS can be used to completely decouple operations of different ...
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Garbage Collection in Java (1)

This is the first in a series of posts about Garbage Collection (GC). I hope to be able to cover a bit of theory and all the major collectors in the hotspot virtual machine over the ...
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Common Red Flags in Java Development

In several years of developing, reading, reviewing, and maintaining hundreds of thousands of lines of Java code, I have become accustomed to seeing certain “red flags” in ...
spring-interview-questions-answers

The Biggest Flaw of Spring Web Applications

The developers who are using Spring Framework in their applications are good to talk about the benefits of dependency injection. Unfortunately, they are not so good to leverage its ...
spring-interview-questions-answers

Spring Integration – Robust Splitter Aggregator

A Robust Splitter Aggregator Design Strategy – Messaging Gateway Adapter Pattern What do we mean by robust? In the context of this article, robustness refers to an ability to ...
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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 ...
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