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

Introduction to Domain-Driven Design

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

Strategic Design and Bounded Contexts

• Defining bounded contexts and assigning their specific responsibilities
• Mapping contexts and applying integration patterns
• Addressing team dynamics, organizational boundaries, and data ownership

Tactical Patterns — The Building Blocks of the Domain Model

• Entities and managing identity
• Value objects and the principle of immutability
• Aggregates and defining transaction boundaries

Domain Services, Repositories, and Factories

• Determining when to use domain services versus application services
• Repository patterns and key persistence considerations
• Factory patterns for handling complex object creation

Modeling Complex Behavior and Invariants

• Designing invariants to enforce critical business rules
• Event-driven modeling and the role of domain events
• Consistency models: exploring eventual consistency and sagas

Integrating DDD with Architecture and Engineering Practices

• Aligning DDD strategies with microservices and modular monoliths
• API design, anti-corruption layers, and integration strategies
• Testing domain logic: unit tests, integration tests, and contract tests

Adopting DDD in Teams and Organizations

• Facilitating domain discovery workshops and Event Storming sessions
• Establishing and maintaining a ubiquitous language across teams
• Measuring success metrics and iterating on the domain model

Summary and Next Steps