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MongoDB Facts: 80000+ inserts/second on commodity hardware

While experimenting with some time series collections I needed a large data set to check that our aggregation queries don’t become a bottleneck in case of increasing data loads. We ...
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Integration tests with Maven 3, Failsafe and Cargo plugin

Unit testing is available in Maven out of the box. Because of that very often its used for integration tests as well. Major disadvantage of this is that integration tests can take much ...
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JBoss Drools unit testing with junit-drools

Recently I’ve been working with a project heavily using JBoss Drools. I am not Drools expert – I am not also very convinced to this framework, or maybe only to particular use case ...
spring-interview-questions-answers

Spring REST: Exception handling vol. 2

This is a second article from the series about REST Exception handling with Spring. In my previous post I have described how to organise the most simple exception handling in a REST ...
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Spring Data MongoDB cascade save on DBRef objects

Spring Data MongoDB by default does not support cascade operations on referenced objects with @DBRef annotations as reference says: The mapping framework does not handle cascading saves. ...
java-interview-questions-answers

Exploit better the results of Pmd, Findbugs and CheckStyle.

Many Java static analysis tools exist right there, each one focus on a specific area and has its advantages, we can enumerate:                  Pmd ...
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Add Apache Camel and Spring as jboss modules in WildFly

These days I am playing with Wildfly and Apache Camel and Spring. A simple way to communicate between EARs / WARs is using direct-vm component of Camel. There are many ways to achieve ...
java-interview-questions-answers

Building and testing a websocket server with undertow

The upcoming version of JBoss Application Server will no longer use Tomcat as integrated webserver, but will replace it with undertow. The architecture of undertow is based on handlers ...
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Auditing Entities in Spring Data MongoDB

Spring Data MongoDB 1.2.0 silently introduced new feature: support for basic auditing. Because you will not find too much about it in official reference in this post I will show what ...
java-interview-questions-answers

Two things to remember when using Java RMI

This is a short blog post about two common pitfalls you should be aware of when using Java RMI. Setting java.rmi.server.hostname If you are getting strange Connection refused to host: ...
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