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The power of immutability in a Rich Domain Model
As many other developers, I’ve been used to the fat service layer and the anemic domain model of the transaction script pattern. In that programming model, immutability is pretty much as rare as a...
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Designing the Repository interface
In one of my most recent projects, I decided to design and build the application according to the principles of Domain Driven Design. One of the guidelines promoted by Domain Driven Design is the way...
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User group for DDD enthusiasts in the Netherlands started
Today we release the website of a new User group for all Domain Driven Design enthusiasts. This user group is meant to facilitate all experienced DDD people to unity and share ideas/experiences. We...
View ArticleDomain Driven Design and the equals method
Implementing an equals method in Java can be quite complicated. Fortunately there are numerous document around the web with useful tips, hints and frameworks to assist you in this process. However, an...
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Introduction to DDD for the implementation oriented
Regular readers of gridshore know that Allard and I have attended a training on DDD (Domain Driven Design) and that we have started a user group for DDD in the Netherlands. Allard is using DDD for a...
View ArticleSecond meetup DDDNL user group
Is has been more than a month a go that we had our first meeting, it is shorter than a month before we have the second event. The next event will take place on the 27th of october. The program for the...
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CQRS made easy with cqrs4j
Command Query Responsibility Segregation (CQRS) is an architectural style that makes a clear distinction between commands, which tell an application to do something, and queries, which are requests...
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Axon Framework – the CQRS framework for Java – version 0.4 released
Last week, I published the 0.4 release of the Axon Framework. Axon helps developers build high performance, scalable and extensible applications using the CQRS pattern. The 0.4 release is a major step...
View ArticleAxon Framework 0.6 released
Today, I released version 0.6 of the Axon Framework. 0.6 has many new features and is another step towards full production readiness. There is still some work to do, but first, let’s take a look at...
View ArticleComing up in the Axon Framework
Recently, I released Axon Framework 1.0. Instead of it being an opportunity to take a small break, things have gone into a higher gear instead. In this article, I give a sneak preview of what’s coming...
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