Implementation of Domain Events in Domain Driven Design

There are many different ways to implement domain events in DDD. However, the basic idea is to create a class for each type of event and to publish the event to interested parties using a message queue or other mechanism.

Domain events can be used to implement a variety of patterns, such as:

• CQRS (Command Query Responsibility Segregation): In CQRS, domain events are used to communicate changes to the read model from the write model.
• Event sourcing: In event sourcing, the state of a system is stored as a sequence of events. Domain events are the natural representation of events in a DDD system.
• Event-driven architecture: In an event-driven architecture, domain events are used to trigger actions in other parts of the system.