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

Introduction to Domain-Driven Design

• Foundational principles and the driving motivation behind DDD
• The role of ubiquitous language in fostering collaboration with domain experts
• Differentiating between core, supporting, and generic subdomains

Strategic Design and Bounded Contexts

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

Tactical Patterns — Core Components of the Domain Model

• Managing entities and their identity
• Leveraging value objects and the principle of immutability
• Structuring aggregates and defining transaction boundaries

Domain Services, Repositories, and Factories

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

Modeling Complex Behavior and Invariants

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

Integrating DDD with Architecture and Engineering Practices

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

Adopting DDD in Teams and Organizations

• Facilitating domain discovery workshops and Event Storming sessions
• Developing and maintaining a ubiquitous language across distributed teams
• Measuring success metrics and continuously iterating on the domain model

Summary and Future Directions