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

Fundamentals of Domain-Driven Design

• Core principles and the rationale behind DDD.
• Establishing a ubiquitous language and collaborating effectively with domain experts.
• Differentiating between core, supporting, and generic subdomains.

Strategic Design and Managing Bounded Contexts

• Defining bounded contexts and clarifying their respective responsibilities.
• Utilizing context mapping and various integration patterns.
• Addressing team structures, organizational boundaries, and data ownership issues.

Tactical Patterns — The Structural Elements of the Domain Model

• Managing entities and their identity.
• Implementing value objects and ensuring immutability.
• Structuring aggregates and defining transaction boundaries.

Utilizing Domain Services, Repositories, and Factories

• Determining when to employ domain services versus application services.
• Applying repository patterns and considering persistence strategies.
• Using factory patterns to manage complex object creation.

Modeling Complex Behaviors and Business Invariants

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

Aligning DDD with Architectural and Engineering Standards

• Harmonizing DDD with microservices and modular monolith architectures.
• Designing APIs, implementing anti-corruption layers, and developing integration strategies.
• Testing domain logic through unit tests, integration tests, and contract tests.

Implementing DDD Across Teams and Organizations

• Conducting domain discovery workshops and Event Storming sessions.
• Creating and sustaining a shared ubiquitous language across multiple teams.
• Measuring effectiveness and continuously refining the domain model.

Recap and Future Directions