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

Foundations of Domain-Driven Design

• Core principles and the rationale for adopting DDD
• The role of ubiquitous language in fostering collaboration with domain experts
• Differentiating between core, supporting, and generic subdomains

Strategic Design and Defining Bounded Contexts

• Establishing bounded contexts and delineating their specific responsibilities
• Developing context maps and applying integration patterns
• Managing team structures, organizational boundaries, and data ownership

Tactical Patterns — The Building Blocks of the Domain Model

• Managing entity identity and behavior
• Utilizing value objects and the principle of immutability
• Defining aggregates and establishing transaction boundaries

Implementing Domain Services, Repositories, and Factories

• Determining when to employ domain services versus application services
• Repository patterns and considerations for persistence
• Using factory patterns for the creation of complex objects

Modeling Complex Behavior and Enforcing Invariants

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

Aligning DDD with Architectural and Engineering Practices

• Harmonizing DDD with microservices and modular monolith architectures
• API design, anti-corruption layers, and effective integration strategies
• Testing domain logic through unit tests, integration tests, and contract tests

Adopting DDD Across Teams and Organizations

• Conducting domain discovery workshops and Event Storming sessions
• Maintaining and managing a consistent ubiquitous language across multiple teams
• Measuring success metrics and iterating on the domain model

Wrap-Up and Future Directions