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

Introduction to Domain-Driven Design

• Core principles and motivations 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 responsibilities
• Creating context maps and defining integration patterns
• Managing teams, organizational boundaries, and data ownership

Tactical Patterns — Building Blocks of the Domain Model

• Entities and managing identity
• Value objects and the importance of immutability
• Aggregates and establishing transaction boundaries

Domain Services, Repositories, and Factories

• Determining when to use domain services versus application services
• Applying repository patterns and addressing persistence concerns
• Using factory patterns for complex object creation

Modeling Complex Behavior and Invariants

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

Integrating DDD with Architecture and Engineering Practices

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

Adopting DDD in Teams and Organizations

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

Summary and Next Steps