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

Foundations of Domain-Driven Design

• Core principles and the rationale behind DDD.
• Establishing a ubiquitous language and fostering collaboration with domain experts.
• Classifying core, supporting, and generic subdomains.

Strategic Design and Bounded Contexts

• Defining bounded contexts and delineating their specific responsibilities.
• Developing context maps and selecting appropriate integration patterns.
• Navigating team structures, organizational boundaries, and data ownership.

Tactical Patterns: The Building Blocks of the Domain Model

• Entities and the management of identity.
• Value objects and the principles of immutability.
• Aggregates and defining transaction boundaries.

Domain Services, Repositories, and Factories

• Distinguishing when to use domain services versus application services.
• Implementing repository patterns and considering persistence strategies.
• Utilizing factory patterns for complex object instantiation.

Modeling Complex Behavior and Invariants

• Designing invariants and rigorously enforcing 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 strategies 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.
• Establishing and managing a ubiquitous language across diverse teams.
• Evaluating success metrics and iterating on the domain model.

Conclusion and Path Forward