Contents
What are the dependencies between the DDD layers?
Dependencies between layers in DDD Dependencies in a DDD Service, the Application layer depends on Domain and Infrastructure, and Infrastructure depends on Domain, but Domain doesn’t depend on any layer. This layer design should be independent for each microservice.
How does DDD help you understand the complexity in the domain?
DDD patterns help you understand the complexity in the domain. For the domain model for each Bounded Context, you identify and define the entities, value objects, and aggregates that model your domain. You build and refine a domain model that is contained within a boundary that defines your context.
How to design a DDD-oriented microservice in.net?
Domain-driven design (DDD) advocates modeling based on the reality of business as relevant to your use cases. A microservice’s application layer in .NET is commonly coded as an ASP.NET Core Web API project. The project implements the microservice’s interaction, remote network access, and the external Web APIs used from the UI or client apps
How are domain events used to enforce consistency?
Domain events to enforce consistency between multiple aggregates within the same domain Figure 7-14 shows how consistency between aggregates is achieved by domain events. When the user initiates an order, the Order Aggregate sends an OrderStarted domain event.
How to create entity classes in DDD design?
There are a number of benefits to using a DDD-styled entity classes, but the main one is that the DDD design moves the create/update code inside the entity class, which stops a developer from misinterpreting how to create or update that class.
Which is an entity connected to the root DDD?
DDD has the concept of an aggregate, which is an entity that is connected to a root DDD says the aggregates should only by updated via the root entity.
When to implement a microservice domain model layer in.net?
When you implement a microservice domain model layer in .NET, that layer is coded as a class library with the domain entities that capture data plus behavior (methods with logic). Following the Persistence Ignorance and the Infrastructure Ignorance principles, this layer must completely ignore data persistence details.