| Pitfall | How to fix (with GitHub example) | |---------|----------------------------------| | Anemic Domain Model (no logic in entities) | Compare: ddd-by-examples vs CRUD app | | Leaking DB IDs into domain | Use Value Objects for IDs – example | | No Bounded Contexts | Study Context Map examples | | Missing Domain Events | See C# implementation |
Implementing DDD requires collaboration, disciplined modelling, and clear separation between domain and technical concerns. Using GitHub for source control, CI/CD, and documentation distribution (including PDF) helps teams share findings and maintain deliverables. implementing domain-driven design pdf github
Structure:
src/
Domain/
Customers/
Customer.java (Entity)
Email.java (Value Object)
CustomerRegistered.java (Event)
Application/
RegisterCustomerCommand.java
Infrastructure/
PostgresCustomerRepository.java (implements Domain repo)
✅ Key rule: Infrastructure (DB, HTTP, queues) depends on Domain, not reverse. ✅ Key rule: Infrastructure (DB, HTTP, queues) depends