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

Foundations of Domain-Driven Design

• Core principles and the rationale for adopting DDD
• Establishing a ubiquitous language and fostering collaboration with domain experts
• Differentiating between core, supporting, and generic subdomains

Strategic Design and Bounded Contexts

• Defining bounded contexts and clarifying their responsibilities
• Developing context maps and selecting appropriate integration patterns
• Managing team structures, organizational boundaries, and data ownership

Tactical Patterns — The Building Blocks of the Domain Model

• Managing entities and their identity
• Implementing value objects and ensuring immutability
• Defining aggregates and establishing transaction boundaries

Domain Services, Repositories, and Factories

• Distinguishing when to use domain services versus application services
• Applying repository patterns and addressing persistence considerations
• Utilizing factory patterns for the creation of complex objects

Modeling Complex Behavior and Invariants

• Designing invariants and enforcing critical business rules
• Implementing event-driven modeling and domain events
• Understanding consistency models, including eventual consistency and sagas

Integrating DDD with Architecture and Engineering Practices

• Aligning DDD strategies with microservices and modular monoliths
• Designing APIs, implementing anti-corruption layers, and defining integration strategies
• Testing domain logic through unit tests, integration tests, and contract tests

Adopting DDD in Teams and Organizations

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

Conclusion and Future Directions