Contents
Does DDD belong on the frontend?
No, because architecturally, our system is open for extension (via the front-end, we can change the UI we build on top of it) but closed for modification. This is what we’re doing when we put all the high-level policy in the backend and ensure that the front-end contains no high-level policy.
What is DDD approach?
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. In addition, DDD approaches should be applied only if you are implementing complex microservices with significant business rules.
Is DDD hexagonal?
Normally, hexagonal architecture is used with DDD, but other architectures can be used instead. When applying only the tactical design, it is called DDD-lite (not recommended).
What is domain in DDD principle?
Domain-driven design (DDD) is the concept that the structure and language of software code (class names, class methods, class variables) should match the business domain. DDD connects the implementation to an evolving model.
Why does DDD fit well with agile?
– [Instructor] DDD, of course, works very well with Agile. We’ve seen one reason, which is the collaborative working environment. “Business people and developers work together daily “throughout the project.” And DDD is very much a collaborative process in this way.
What is DDD example?
An aggregate is a domain-driven design pattern. It’s a cluster of domain objects (e.g. entity, value object), treated as one single unit. A car is a good example. It consists of wheels, lights and an engine.
What are the business rules of a domain?
Questions like these should be answered by the domain expert and will be the business rules that control the behavior of the system. This also will guide the definition of entities, value objects, commands, and other elements of the system. How to define each element is beyond the scope of this article.
Which is the best book for Domain Driven Design?
There are books dedicated to this topic like Eric Evans’ Domain-Driven Design, and if you are implementing a .NET I would recommend Hands-On Domain-Driven Design with .NET Core. This article will cover only the part of how to structure business rules that:
When to use command approach for business rules?
Using a command approach should be structured around tasks a user executes and provide a clear output. When you think about business rules, especially if you are a technical person, you probably imagine lines of code or a business rules engine (if you use one).
What are the different responsibilities of business rules?
Business rules have different responsibilities, such as providing validation or generating outputs. Deciding how to process events has an impact on the general design and the consequences need to be understood before making any decision. Using a command approach should be structured around tasks a user executes and provide a clear output.