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

Introduction to Domain-Driven Design

• Underlying principles and drivers behind DDD
• Establishing ubiquitous language and collaborating with domain experts
• Differentiating between core, supporting, and generic subdomains

Strategic Design and Bounded Contexts

• Defining bounded contexts and assigning responsibilities
• Creating context maps and selecting integration patterns
• Addressing team structures, organizational boundaries, and data ownership

Tactical Patterns — The Building Blocks of the Domain Model

• Entities and managing identity
• Value objects and the principle of immutability
• Aggregates and defining transaction boundaries

Domain Services, Repositories, and Factories

• Distinguishing between domain services and application services
• Repository patterns and considerations for persistence
• Using factory patterns for complex object instantiation

Modeling Complex Behavior and Invariants

• Designing invariants and enforcing business rules
• Event-driven modeling and utilizing domain events
• Consistency models: exploring eventual consistency and sagas

Integrating DDD with Architecture and Engineering Practices

• Aligning DDD with microservices and modular monolith architectures
• API design, implementing 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
• Building and maintaining a ubiquitous language across teams
• Evaluating success metrics and refining the domain model

Summary and Future Steps