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

• Defining bounded contexts and their specific responsibilities
• Utilizing context mapping and integration patterns
• Managing team structures, organizational boundaries, and data ownership

Tactical Patterns — Foundational Elements of the Domain Model

• Entities and managing identity
• Value objects and ensuring immutability
• Aggregates and defining transactional boundaries

Domain Services, Repositories, and Factories

• Deciding when to use domain services versus application services
• Applying repository patterns and considering persistence strategies
• Using factory patterns for complex object instantiation

Modeling Complex Behavior and Invariants

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

Integrating DDD with Architectural and Engineering Practices

• Aligning DDD with microservices and modular monolith architectures
• Designing APIs, implementing anti-corruption layers, and managing integrations
• Testing domain logic through unit, integration, and contract tests

Implementing DDD in Teams and Organizations

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

Conclusion and Recommended Next Steps