Table of Contents
Is MVC Domain-Driven Design?
Domain-driven design separates the model layer “M” of MVC into an application, domain and infrastructure layer. The infrastructure layer is used to retrieve and store data. The domain layer is where the business knowledge or expertise is.
What is a service in Domain-Driven Design?
Domain Services (or just Services in DDD) is used to perform domain operations and business rules. In his DDD book, Eric Evans describes a good Service in three characteristics: The operation relates to a domain concept that is not a natural part of an Entity or Value Object.
What is a service domain?
Service Domains are logical groupings of service-level aspects that enable the system to measure provisioning in different categories. Examples of Service Domains include Availability, Backup, and Help Desk.
When should you use a domain service?
You only need a Domain Service if the piece of domain logic you are modelling does not naturally fit on any Domain Object. A common scenario for this is when the responsibility of the action does not naturally fit on any particular object or if it requires multiple Domain Objects in order to co-ordinate the action.
Why do we need DDD?
DDD provides sound software development techniques that address both strategic and tactical design. Strategic design helps us understand what are the most important software investments to make, what existing software assets to leverage in order to get there fastest and safest, and who must be involved.
What are MVC services?
MVC (or Model-View-Controller) is an architectural pattern on which to build software. The basic idea in it is to separate internal data models from the user interface via the controller and view.
What is domain Services in microservices?
A domain service builds on the basic definition of a microservice: it’s a loosely-coupled, independently deployable element of software architecture which is owned by a single team.
Can domain services use repository?
Yes, a domain service can access repositories.
Is DDD and Clean Architecture same?
Use Cases (a Clean Architecture term) are similar to Application Services in DDD. At least their relative positioning is….Application Services.
| Book | Known as | Layer |
|---|---|---|
| Domain-Driven Design (DDD) | Application Service | Application |
| Clean Architecture (CA) | Use Case | Application |
What is Domain Driven Design in software engineering?
Domain-driven design (DDD) advocates modeling based on the reality of business as relevant to your use cases. In the context of building applications, DDD talks about problems as domains. It describes independent problem areas as Bounded Contexts (each Bounded Context correlates to a microservice), and emphasizes a common language to talk about
What is a microservice domain model layer?
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.
What is the domain model of a monolithic application?
Define the domain models of the monolithic application. The domain model is an abstract model of the business domain. Define bounded contexts for the models. A bounded context is the boundary within a domain where a particular domain model applies.
What is the best book to learn Domain-Driven Design?
If the ideas presented here appeal to you, I highly recommend that you deepen your toolbox by reading the book Domain-Driven Design: Tackling Complexity in the Heart of Software, by Eric Evans. More than simply the original introduction to DDD, it is a treasure trove of information by one of the industry’s most seasoned software designers.