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Axon is a popular framework for writing Java applications following DDD, event sourcing, and CQRS principles. While especially useful in a microservices context, Axon provides great value in building...
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Learning to write a proper Axon application from scratch consists of various aspects. First, there's the conceptual stuff to grasp (DDD, event sourcing, CQRS) and details about the actual framework...
Axon Framework 3.3 has just been released, and it has several interesting new features. In this blog, I'd like to highlight one that I’m particularly excited about: subscription queries. Before we...
In today’s software world, everything’s changed when it comes to operational (non-functional) requirements. We have applications running on thousands of cores, producing petabytes of data, and, of...
In your application, you probably have created a couple of components:
How do I enhance events with data that is not part of the Aggregate to answer the question? I can provide several possibilities. I will list them here in this blog post:
Imagine there is an Order aggregate with two entities: Order and OrderLine. The Order entity is the Aggregate root. Generally, your application will add, remove and edit OrderLines from order during...
