Domain-Driven Design: Concepts and Practices for Senior Developers Training Course

Foundations of Domain-Driven Design

• Core principles and the rationale behind DDD
• The role of ubiquitous language in collaborating with domain experts
• Differentiating between core, supporting, and generic subdomains

Strategic Design and Bounded Contexts

• Establishing bounded contexts and defining their respective responsibilities
• Developing context maps and selecting integration patterns
• Addressing team structures, organizational boundaries, and data ownership

Tactical Patterns — Components of the Domain Model

• Entities and the management of identity
• Value objects and the principle of immutability
• Aggregates and defining transaction boundaries

Domain Services, Repositories, and Factories

• Determining when to apply domain services versus application services
• Repository patterns and considerations for persistence
• Factory patterns for creating complex objects

Modeling Complex Behavior and Invariants

• Structuring invariants and enforcing business rules
• Event-driven modeling and the use of domain events
• Consistency models, including eventual consistency and sagas

Aligning DDD with Architecture and Engineering Practices

• Harmonizing DDD with microservices and modular monoliths
• API design, anti-corruption layers, and integration strategies
• Testing domain logic through unit, integration, and contract tests

Implementing DDD in Teams and Organizations

• Conducting domain discovery workshops and Event Storming sessions
• Building and sustaining a ubiquitous language across teams
• Evaluating success metrics and iterating on the domain model

Conclusion and Future Directions