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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 what has changed… Continue reading Axon Framework 0.6 released
Besides some changes to existing building blocks, such as the event bus, which is now much more powerful, the 0.5 version also includes some new features. Read on to find out more. Continue reading Axon Framework 0.5 released In this post we focus on getting the task based user interface. We have the basic building blocks in the application, but the screens are a bit stupid. How many applications would you create where you have to manually copy the identifier of a contact to an address when you want to register an address for this contact. Well in the current version of the application this is what you really have to do. What are the tasks that we focus on right now:
But before we step into creating the front-end, we install some plugins that I discussed in previous posts. Continue reading Use Grails and Axon to create a CQRS application (part II)
http://www.gridshore.nl/2010/02/25/creating-a-sample-for-axon-using-flex-and-parsley/ In this blog item I am describing changes based on a new feature made available in Axon. Allard has created support for a CommandBus and command handlers. Basic idea is that you dispatch items on the bus, and a registeredhandler picks it up and handles it. This makes the command query separation also more clear on the flex side of the application. Continue reading Attaching flex to Axon using the new Axon CommandBus
In this blog post I’ll discuss the integration between grails and axon. How can we create an application with grails that makes use of Axon to implement CQRS. I’ll discuss the way to create commands and send these to axon. I’ll also discuss responding to events coming from axon. First I have to show some aspects of a grails project that you need to know before you can use Axon. I’ll try to take you with me when I take the steps to create a good integration between Axon and Grails. Continue reading Use Grails and Axon to create a CQRS application (part I) jQuery(document).ready(function($) { window.setTimeout(‘loadFBShareMe_997()’,5000); }); function loadFBShareMe_997(){ jQuery(document).ready(function($) { $(‘.dd-fbshareme-997′).remove();$(‘.DD_FBSHAREME_AJAX_997′).attr(‘width’,’53′);$(‘.DD_FBSHAREME_AJAX_997′).attr(‘height’,’69′);$(‘.DD_FBSHAREME_AJAX_997′).attr(‘src’,'http://widgets.fbshare.me/files/fbshare.php?url=http://www.gridshore.nl/2010/01/27/cqrs-designing-domain-events/&size=large’); }); } 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 [...] 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 for information from an application. This distinction comes from the fact that the requirements (and thus also the model) for the execution and validation of commands are significantly different than those for queries. Events play an important role in the synchronization of application state resulting from executed command. Applying a CQRS style architecture involves the development of quite a lot of “plumbing” code: event dispatching, asynchronous event processing, transactions, etc. cqrs4j, an Apache 2 licensed open source framework, takes care of all the plumbing for you. Read on to find out how… Continue reading CQRS made easy with cqrs4j |
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Today, I finalized the 0.5 release of the Axon Framework. There is quite a number of changes since the 0.4 version. The 0.5 version is a major step towards production readiness of the framework.
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