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

Introduction to Domain-Driven Design

• Core principles and the rationale behind 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 clarifying their responsibilities
• Developing context maps and integration patterns
• Addressing team structures, organizational limits, and data ownership

Tactical Patterns — The Foundations of the Domain Model

• Entities and the management of identity
• Value objects and the principle of immutability
• Aggregates and the definition of transaction boundaries

Domain Services, Repositories, and Factories

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

Modeling Complex Behavior and Invariants

• Designing invariants and enforcing business rules
• Event-driven modeling and the use of domain events
• 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 through unit, integration, and contract tests

Adopting DDD in Teams and Organizations

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

Summary and Next Steps