[[Anemic Domain Model]] vs [[Rich Domain Model]] | Aspect | Anemic Domain Model Pros | Anemic Domain Model Cons | Rich Domain Model Pros | Rich Domain Model Cons | |-----------------------|-----------------------------------------------------------|---------------------------------------------------|-------------------------------------------------------------|----------------------------------------------------------| | **Encapsulation** | - Simplifies understanding by separating concerns. | - Poor integration of behavior and data. | - High integration of data and behavior enhances coherence. | - Complexity in initial design and ongoing management. | | **Complexity** | - Easier to implement due to less initial complexity. | - Fails to encapsulate complex domain logic. | - Accurately models complex domain logic. | - Higher initial learning curve and setup complexity. | | **Reusability** | - Modular design can be easier to reuse in other contexts.| - Logic often scattered, harder to reuse cohesively.| - Encapsulated behavior improves reusability in domain contexts. | - Can be overly specific, limiting reuse outside the domain.| | **Maintainability** | - Clear separation can simplify updates in data layers. | - Scattered business logic complicates updates. | - Centralized logic enhances ease of maintenance. | - Complexity can make maintenance more challenging if not well-organized.| | **Testability** | - Services are easily mocked and tested. | - Domain logic testing may not reflect real operations.| - Integrated behavior allows for more realistic tests. | - More complex setup required for testing integrated systems.| | **Scalability** | - Easy to scale services and data layers separately. | - Integration of data and behavior might be less scalable. | - Careful design enables effective scalability. | - Tightly integrated models may require more thoughtful scaling approaches.| | **Suitability** | - Best for simpler applications with minimal business logic.| - Not suitable for complex domain logic applications.| - Ideal for complex domains with rich business rules. | - Overhead may not be justified for simpler applications. | | **Framework Integration** | - Often better supported by traditional CRUD-focused frameworks.| - Might require additional effort to implement domain behaviors. | - Supported by DDD-oriented frameworks that promote behavior-data integration.| - Some frameworks may not accommodate rich model complexity well.|