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Hibernate locking patterns – How does Optimistic Lock Mode work

Explicit optimistic locking In my previous post, I introduced the basic concepts of Java Persistence locking. The implicit locking mechanism prevents lost updates and it’s suitable ...
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Learning Netflix Governator – Part 2

To continue from the previous entry on some basic learnings on Netflix Governator, here I will cover one more enhancement that Netflix Governator brings to Google Guice – Lifecycle ...
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SSL with WildFly 8 and Undertow

I’ve been working my way through some security topics along WildFly 8 and stumbled upon some configuration options, that are not very well documented. One of them is the TLS/SSL ...
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Display a string list in an Android ListView

Showing a list of items is a very common pattern in mobile application. This pattern comes up often when I make a tutorial: I often need to interact with data, but I don’t want to ...
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Self-Signed Certificate for Apache TomEE (and Tomcat)

Probably in most of your Java EE projects you will have part or whole system with SSL support (https) so browsers and servers can communicate over a secured connection. This means that ...
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NoSQL with Hibernate OGM – Part one: Persisting your first Entities

The first final version of Hibernate OGM is out and the team recovered a bit from the release frenzy. So they thought about starting a series of tutorial-style blogs which give you ...
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Development Horror Story – Release Nightmare

Everyone has good stories about releases that went wrong, right? I’m no exception and I have a few good ones under my development career. These are usually very stressful at the time, ...
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Java8 Lambdas: Sorting Performance Pitfall EXPLAINED

Written in collaboration with Peter Lawrey. A few days ago I raised a serious problem with the performance of sorting using the new Java8 declarative style. See blogpost here.  In ...
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Logging to Redis using Spring Boot and Logback

When doing centralized logging, e.g. using Elasticsearch, Logstash and Kibana or Graylog2 you have several options available for your Java application. You can either write your standard ...
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Separating Integration Tests from Unit Tests Using Maven Failsafe & JUnit @Category

Why Unit Tests Should Run Separately From Integration Tests TDD at the Unit Testing level is fairly straight-forward, since classes in unit testing either do not have complex dependencies, ...
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