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

Foundations of Domain-Driven Design

• Core principles and the rationale for adopting DDD.
• Establishing ubiquitous language through effective collaboration with domain experts.
• Differentiating between core, supporting, and generic subdomains.

Strategic Design and Managing Bounded Contexts

• Defining bounded contexts and delineating their specific responsibilities.
• Mapping contexts and selecting appropriate integration patterns.
• Addressing team structures, organizational boundaries, and data ownership models.

Tactical Patterns — The Structural Elements of Domain Models

• Entities and the management of identity.
• Value objects and the principle of immutability.
• Aggregates and defining transactional boundaries.

Domain Services, Repositories, and Factory Patterns

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

Modeling Complex Behaviors and Enforcing Invariants

• Designing invariants to strictly enforce business rules.
• Event-driven modeling techniques and the use of domain events.
• Consistency models, including eventual consistency and saga patterns.

Aligning DDD with Architectural and Engineering Standards

• Harmonizing DDD with microservices and modular monolith architectures.
• API design, anti-corruption layers, and strategic integration approaches.
• Testing domain logic through unit, integration, and contract testing.

Organizational Adoption of DDD

• Facilitating domain discovery workshops and Event Storming sessions.
• Cultivating and maintaining a shared ubiquitous language across teams.
• Assessing success metrics and iterating on the domain model.

Wrap-up and Future Roadmap