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

Foundations of Domain-Driven Design

• Core principles and the driving motivations behind DDD
• Establishing ubiquitous language and fostering collaboration with domain experts
• Differentiating between 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 strategies for identity management
• Value objects and the principle of immutability
• Aggregates and defining transaction boundaries

Domain Services, Repositories, and Factories

• Distinguishing when to apply domain services versus application services
• Repository patterns and considerations for data persistence
• Utilizing Factory patterns for the creation of complex objects

Modeling Complex Behavior and Business Invariants

• Designing invariants and enforcing critical business rules
• Implementing event-driven modeling and domain events
• Consistency models: understanding eventual consistency and sagas

Aligning DDD with Architectural and Engineering Practices

• Harmonizing DDD 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 Across Teams and Organizations

• Facilitating domain discovery workshops and Event Storming sessions
• Building and managing a consistent ubiquitous language across the organization
• Evaluating success metrics and continuously iterating on the domain model

Key Takeaways and Future Directions