Aggregates
In this section, you will learn about event sourced aggregates, their structure, other components involved in an event sourced system, and how to test aggregates.
Aggregates
Aggregates are the most important part of Domain-Driven Design. They are not just plain old PHP objects (POPO), but rich models that help with the...
August 14, 2024
Identifies Aggregate
Value Objects for Aggregates. Value Objects are highly recommended when identifying an aggregate or domain model.
August 14, 2024
Domain Event
An event is something that has happened in the past. A domain event is something that has happened and affects the state of the application.
August 14, 2024
Records Events
Objects responsible for recording domain events. Domain events describe what has happened, but they originate from an aggregate or domain model.
August 14, 2024
Protecting Invariants
An invariant is something that holds true about your domain no matter what. Invariants ensure consistency within the domain.
August 14, 2024
Event Sourcing
Loading an aggregate back into memory involves reconstituting its previously recorded history. This concept is called Event Sourcing.
August 14, 2024