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

Introduction to Domain-Driven Design

• Core principles and underlying motivations for DDD
• Utilizing ubiquitous language and collaborating with domain experts
• Differentiating between core, supporting, and generic subdomains

Strategic Design and Bounded Contexts

• Establishing bounded contexts and delineating their responsibilities
• Mapping contexts and applying integration patterns
• Addressing team dynamics, organizational boundaries, and data ownership

Tactical Patterns — Building Blocks of the Domain Model

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

Domain Services, Repositories, and Factories

• Distinguishing between domain services and application services
• Applying repository patterns and addressing persistence requirements
• Using factory patterns for the creation of complex objects

Modeling Complex Behavior and Invariants

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

Adopting DDD in Teams and Organizations

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

Summary and Next Steps