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PostgreSQL’s Best-Kept Secret, and how to Use it with jOOQ


PostgreSQL has a lot of secret data types. In recent times, PostgreSQL’s JSON and JSONB support was hyped as being the NoSQL on SQL secret (e.g. as advertised by ToroDB) that allows you to get the best out of both worlds. But there are many other useful data types, among which the range type. How does the range type work? ...

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Docker Machine on Windows – How To Setup You Hosts


I’ve been playing around with Docker a lot lately. Many reasons for that, one for sure is, that I love to play around with latest technology and even help out to build a demo or two or a lab. The main difference, between what everybody else of my colleges is doing is, that I run my setup on Windows. Like ...

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Using Junit Test Name


Name your tests When we create Junit test usually there is no practical use of the name of the method. The Junit runner uses reflection to discover the test methods and since version 4 you are not restricted to start the name of the method with test anymore. The name of the test methods are there for documentation purpose. There ...

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WildFly Swarm: Building Microservices with Java EE


¨Perfection is achieved, not when there is nothing more to add, but when there is nothing left to take away¨ Antoine de Saint-Exupery This quote by the French writer Antoine de Saint-Exupery was made to substantiate that often less is more. This is true for architect, artist, designer, writer, running, software developer, or in any other profession. Simplicity, minimalism, cutting down the cruft always goes ...

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Impulse: “Crafted Design”


About half a year ago I urged you to watch Robert C. Martin’s talk Architecture – The Lost Years. It argued in favor of a design that clearly displays the application’s domain (e.g. logical units, services, use cases, …) and keeps auxiliary aspects (e.g. delivery mechanism, persistence, …) on the sidelines. While I really liked the talk, it was fairly ...

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Creating a Message Driven Bean with AWS SQS in Spring


In my previous post I showed a simple example how to use AWS SQS with Spring Framework to put messages on a queue and to read them from the queue. In this post I go one step further and use Spring to create a ‘Message Driven Bean’ so each message that is put on the queue is picked up and ...

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Netflix Archaius for property management – Basics


Netflix Archaius provides a neat set of features to load dynamic properties into an application. This blog post is just a documentation of the extent of Archaius that I have understood, there is much more to it than I have documented here, but this should provide a good start:     Default Behavior Consider a simple properties file: stringprop=propvalue listprop=value1, ...

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