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Use Cases for Elasticsearch: Analytics

In the last post in this series we have seen how we can use Logstash, Elasticsearch and Kibana for doing logfile analytics. This week we will look at the general capabilities for doing ...
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RabbitMQ – Processing messages serially using Spring integration Java DSL

If you ever have a need to process messages serially with RabbitMQ with a cluster of listeners processing the messages, the best way that I have seen is to use a “exclusive consumer” ...
java-interview-questions-answers

Updates on CDI 2.0

CDI 2.0 is the next version of Contexts and Dependency Injection for the Java EE Platform and a candidate for inclusion in Java EE 8. It is being worked upon since September 2014 and ...
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Really Too Bad that Java 8 Doesn’t Have Iterable.stream()

This is one of the more interesting recent Stack Overflow questions: Why does Iterable not provide stream() and parallelStream() methods? At first, it might seem intuitive to make it ...
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The New Agile – Certifications

Last time we looked at how things came to be. How things converged around a group of software developers in a ski resort: There were actual experiments in the field with reported successes. ...
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Creating a REST API with Spring Boot and MongoDB

This year I greeted Christmas in a different fashion: I was a part of the Java Advent Calendar. Let’s boot up for Christmas: Spring Boot is an opinionated framework that simplifies ...
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The Inconvenient Truth About Dynamic vs. Static Typing

Sometimes there are these moments of truth. They happen completely unexpectedly, such as when I read this tweet: Good discussion of Facebook Flow – http://t.co/5KTKakDB0w — ...
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Good Enough

We hear a lot about building products which are “good enough” or “just barely good enough.” How do we know what “good enough” means for our customers?  No one really tells ...
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5 ways to initialize lazy relations and when to use them

Lazy loading of relations between entities is a well established best practice in JPA. Its main goal is to retrieve only the requested entities from the database and load the related ...
java-interview-questions-answers

One Jar To Rule Them All: Arquillian + Java 8

With Java 8, a lot of new language improvements have been implemented for making life of developer easier. In my opinion, one of the greatest things it has Java 8 is that in some situations ...
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