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

Foundations of Domain-Driven Design

• Core principles and the rationale behind adopting DDD
• Cultivating a ubiquitous language through collaboration with domain experts
• Differentiating between core, supporting, and generic subdomains

Strategic Design and Bounded Contexts

• Establishing bounded contexts and assigning clear responsibilities
• Developing context maps and selecting appropriate integration patterns
• Addressing team structures, organizational boundaries, and data ownership

Tactical Patterns — The Components of the Domain Model

• Managing entity identity
• Utilizing value objects and ensuring immutability
• Defining aggregates and transactional boundaries

Domain Services, Repositories, and Factories

• Determining when to employ domain services versus application services
• Applying repository patterns and addressing persistence challenges
• Using factory patterns for complex object instantiation

Modeling Complex Behavior and Invariants

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

Aligning DDD with Architecture and Engineering Standards

• Harmonizing DDD with microservices and modular monolith architectures
• Designing APIs, implementing anti-corruption layers, and planning integration strategies
• Testing domain logic through unit, integration, and contract tests

Implementing DDD in Teams and Organizations

• Facilitating domain discovery workshops and Event Storming sessions
• Building and maintaining a ubiquitous language across teams
• Tracking success metrics and refining the domain model

Concluding Remarks and Future Directions