domain-driven-design

You model complex business domains by defining bounded contexts, aggregates, and domain events. This approach enforces transactional and eventual consistency across systems and teams, ensuring clear domain boundaries and maintaining invariants within bounded boundaries.

In domain-driven design, an aggregate acts as a root entity enforcing invariants within a bounded boundary, while a value object represents a domain concept without identity, such as Money. These tactical patterns maintain invariants across systems and teams.

To start implementing a domain model, define a bounded context, create a model with an Order aggregate root and Money as a value object, then implement a simple repository pattern to reconstitute aggregates from persistence.

You need domain events in a bounded context when coordinating cross-context behavior, such as linking an Order aggregate to a Customer context. They address eventual consistency by enabling clean integration across microservices and teams.

Yes, domain-driven design works for systems requiring transactional and eventual consistency by applying domain modeling constructs like aggregates, entities, and domain events to address both consistency types across distributed services.