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

Introduction to Domain-Driven Design

• Core principles and the motivation behind adopting DDD.
• Utilizing ubiquitous language to foster collaboration with domain experts.
• Distinguishing between core, supporting, and generic subdomains.

Strategic Design and Bounded Contexts

• Defining bounded contexts and clarifying their responsibilities.
• Context mapping and exploring integration patterns.
• Managing team dynamics, organizational boundaries, and data ownership.

Tactical Patterns — The Building Blocks of the Domain Model

• Understanding entities and identity management.
• Working with value objects and ensuring immutability.
• Implementing aggregates and defining transaction boundaries.

Domain Services, Repositories, and Factories

• Determining when to use domain services versus application services.
• Applying repository patterns and addressing persistence concerns.
• Leveraging factory patterns for the creation of complex objects.

Modeling Complex Behavior and Invariants

• Designing invariants and enforcing strict business rules.
• Employing event-driven modeling and managing domain events.
• Understanding consistency models, including eventual consistency and sagas.

Integrating DDD with Architecture and Engineering Practices

• Aligning DDD with microservices architectures and modular monoliths.
• API design, implementing anti-corruption layers, and developing integration strategies.
• Testing domain logic through unit tests, integration tests, and contract tests.

Adopting DDD in Teams and Organizations

• Facilitating domain discovery workshops and conducting Event Storming sessions.
• Establishing and maintaining a ubiquitous language across teams.
• Measuring success metrics and iterating on the domain model.

Summary and Next Steps