Domain Driven Design Aggregate Vs Entity

This is part of the domain driven design w typescript node js course.

Domain driven design aggregate vs entity. I spent a lot of time doing rework writing untestable code trying to invent my own bad abstractions and putting all my business logic into anemic services. As expected this article has within hours of posting received some criticism for the approach used to o r mapping with entity framework. Aggregate is a pattern in domain driven design.

Value object boil down to people having issues with duplication of data. Aggregate boundaries and behavior. Before i got into software design and architecture my code was hurting.

Ddd fights the inevitable complexity that that brings by forcing duplication where it s needed and allowing concepts that were once thought to be one into many. For everyone who has read my book and or effective aggregate design but have been left wondering how to implement aggregates with domain driven design ddd on the net platform using c and entity framework this post is for you. An example may be an order and its line items these will be separate objects but it s useful to treat the order together with its line items as a single aggregate.

The biggest reason why companies move towards domain driven design is because their business has taken on a necessary complexity. Ddd connects the implementation to an evolving model. I was reading about ddd and i realize that sometimes an entity might be a vo or vo might be an entity.

Here are some thoughts on distinctions between aggregates and entities in domain driven design ddd. For example if a software processes loan applications it might have classes such as loanapplication and customer and methods such as acceptoffer and withdraw. 18 19 and 24.

Ensure decent database performance. Also from the domain driven design with typescript series. But that may be because i haven t seen a domain yet where the model needed anything more complicated.