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

Introduction to Domain-Driven Design

• Foundational principles and motivations for 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 delineating their responsibilities
• Context mapping and establishing integration patterns
• Managing teams, organizational boundaries, and data ownership

Tactical Patterns — Core Elements of the Domain Model

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

Domain Services, Repositories, and Factories

• Determining when to utilize domain services versus application services
• Repository patterns and addressing persistence considerations
• Factory patterns for managing complex object creation

Modeling Complex Behavior and Invariants

• Designing invariants and enforcing strict business rules
• Event-driven modeling and the role of domain events
• Consistency models: implementing eventual consistency and sagas

Integrating DDD with Architecture and Engineering Practices

• Aligning DDD structures with microservices and modular monoliths
• API design, anti-corruption layers, and integration strategies
• Testing domain logic: unit tests, integration tests, 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