Domain Events are objects that model significant occurrences within a domain. They capture changes or transitions that are meaningful to the business and help in maintaining a history of state changes, facilitating communication between different parts of the system.
What are the benefits of using Domain Events?
The benefits of using Domain Events include improved decoupling of components, better scalability, and enhanced ability to audit and track significant state changes within the system. They facilitate asynchronous communication and integration between different parts of the system.
How do Domain Events differ from other event-driven architectures?
Domain Events specifically capture and convey significant business changes within a domain, whereas general event-driven architectures might handle a broader range of events, including system and infrastructure events. Domain Events are deeply tied to the business logic and the ubiquitous language of the domain.
How are Domain Events implemented in a system?
Domain Events are implemented by defining event classes that represent significant occurrences in the domain. When a state change occurs, an event is created and published to an event handler or event bus, which then processes the event and triggers appropriate actions or workflows. This typically involves using an event store or messaging system to manage and dispatch events.