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

Introduction to Domain-Driven Design

• Core principles and the rationale behind DDD
• Establishing a ubiquitous language and collaborating 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 integration patterns
• Addressing team structures, organizational boundaries, and data ownership

Tactical Patterns — Foundation of the Domain Model

• Managing entities and identity
• Leveraging value objects and immutability
• Defining aggregates and transaction boundaries

Domain Services, Repositories, and Factories

• Distinguishing between domain services and application services
• Applying repository patterns and addressing persistence needs
• Using factory patterns for complex object instantiation

Modeling Complex Behavior and Invariants

• Designing invariants to enforce business rules
• Employing event-driven modeling and domain events
• Implementing 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 planning 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
• Establishing and maintaining a ubiquitous language across teams
• Evaluating success metrics and iterating on the domain model

Summary and Next Steps