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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 towards 1.0, and includes transactional event handling, high-performance caching repositories and easy configuration of event sourcing support. Furthermore, we have also built a [...] Command-Query Responsibility Segregation (CQRS) is slowly but steadily gaining ground as an architecture that helps developers to develop scalable, extensible and maintainable applications. Events play a major role in this architecture, and the way you design these events greatly influence the extensibility of your application. 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 implementation of the equals method that is technically correct doesn’t have to make any sense functionally. In Domain Driven Design, your domain model [...] 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 the interface of the Repository is designed. This changed the way I look at both the design and the location [...] 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 Dodo. However, I have been investigating the rich domain model pattern lately (as you can read in my previous post) and [...] Using Spring, it is easy to inject any instance with its dependencies, as long as the instance is managed by the Spring container. This typically means that the to-be injected beans are configured in the XML configuration. However, sometimes, it is impossible or ugly design to have objects managed by the Spring container. For example, [...] Recently, SpringSource released the first version of their DM server. The SpringSource DM Server provides the ability to build enterprise web applications. In the basis, S2DM is a fine mixture of Equinox and Tomcat. |
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