Questions tagged [domain-driven-design]
Domain-driven design (DDD) is an approach to develop software for complex needs by connecting the implementation to an evolving model.
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How should domain models be designed — rich domain models with encapsulated logic vs. anemic models with separate service/util layers?
I'm learning Domain-Driven Design (DDD) and studying different architecture patterns, and I’ve come across two seemingly conflicting design philosophies around domain modeling.
1. Rich Domain Model ...
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Keeping the impact of changes low when moving shared domain objects into a library
I’m refactoring a microservice project where multiple services share the same domain objects. Over time, these objects have diverged across services, causing inconsistencies.
To solve this, I plan to ...
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How to Handle Data Persistence In Domain Driven Design
I am currently reading about domain-driven design and n-tier architecture with a service layer, and comparing them to try to understand how each architecture is executed.
For n-tiers (specifically 3-...
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How could I map a complex DTO to a Domain Aggregate in a Repository?
I'm working on a TypeScript application designed with DDD and using layered architecture. My infra layer has a repository that fetches a complex, nested DTO. My current implementation maps this DTO ...
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When using Clean Code with Ports and Mappers: which layer declares the Entity (Aggregate) factory interface and which one implements it?
So I was reading Eric Evans DDD book and one point that was not clear to me is which Layer (in case of using Clean Code) should be reponsible to:
define the interface contract for an Entity (...
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Practicing DDD from the biggest modules to the smallest widgets
I have a frontend project using VueJS and TS and I structured it using DDD. So far, I have some modules (bounded contexts, domains - use the term you prefer) which are used in two ways: some modules ...
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Managing Growth in Microservice Architecture: Is Modular Monolith the Solution?
Our team of 5 members are managing a microservice architecture that currently includes around 200 Java Spring boot microservices, with approximately 50 new services being added each year. We follow ...
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How to get rid of Mappers and make objects build themselves?
I am having a really hard time deciding where to instantiate my entities in the refactoring I am making. The project was built with DDD and it's layered: it has the infra, domain and app layers. In ...
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Tree model in Domain Driven Design
A site is composed of pages.
Each page is either a root page or the
child of another page, forming a parent–child hierarchy.
The page tree has a fixed maximum depth.
When relocating a subtree:
The ...
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Modeling superstate and substate combinations in DDD
I am designing an analytics application using domain driven design and test driven development.
I am having difficulty modeling the following requirement:
The application shows a workitem's state. ...
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Dividing an HR Application into Bounded Contexts: Understanding How to Split a Domain into Multiple Models
I’m trying to understand bounded contexts by trying to apply them to an example HR application. According to a book called Patterns, Principles, and Practices of Domain-Driven Design (PPPDDD), context ...
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DDD and Domain Models with a Web Api PUT / POST
The company I'm working at has strict policies that insist that all business logic is contained in Domain Models as part of DDD.
I can see how this approach could work well for something like a ...
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How do I encapsulate domain logic and preserve state in DDD+Clean Architecture?
(For context I am developing in Angular)
Historically my applications have tended towards the layered architecture that the Angular fraemwork leads you into.
However I feel that the next application I ...
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DDD - When a single physical entity in the problem space is represented as different concepts in code, how to link them together?
When a single physical entity means different things in different contexts, DDD principles recommend creating different entities in each bounded context.
This is an example taken from the book "...
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Is it good DDD practice to hide all the aggregate methods behind domain services?
I'm working on a DDD-based system and was researching the best way to handle domain services and keep business logic consistent.
During my research, I came across this insightful quote from Steve ...
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