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

Foundations of Domain-Driven Design

• Core principles and the rationale for adopting DDD
• The role of ubiquitous language and effective collaboration with domain experts
• Differentiating between core, supporting, and generic subdomains

Strategic Design and the Role of Bounded Contexts

• Establishing bounded contexts and defining their specific responsibilities
• Utilizing context maps and standard integration patterns
• Navigating team structures, organizational boundaries, and data ownership issues

Tactical Patterns — Core Components of the Domain Model

• Managing entities and their identity
• Leveraging value objects and the principle of immutability
• Defining aggregates and their transactional boundaries

Domain Services, Repositories, and Factory Patterns

• Determining when to apply domain services versus application services
• Implementing repository patterns and considering persistence strategies
• Using factory patterns to handle complex object instantiation

Modeling Complex Behaviors and Business Invariants

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

Aligning DDD with Architectural and Engineering Standards

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

Implementing DDD in Teams and Organizational Structures

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

Conclusion and Path Forward