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

Introduction to Domain-Driven Design

• Foundational principles and the rationale behind DDD
• Establishing a ubiquitous language and fostering collaboration with domain experts
• Differentiating between core, supporting, and generic subdomains

Strategic Design and Bounded Contexts

• Defining bounded contexts and their respective responsibilities
• Context mapping and integration strategies
• Managing team structures, organizational boundaries, and data ownership

Tactical Patterns — Fundamental Components of the Domain Model

• Entities and identity management
• 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 considerations for persistence
• Factory patterns for managing complex object creation

Modeling Complex Behavior and Invariants

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

Aligning DDD with Architecture and Engineering Practices

• Harmonizing DDD with microservices and modular monoliths
• API design, anti-corruption layers, and integration tactics
• Testing domain logic through unit tests, integration tests, 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
• Measuring success and continuously refining the domain model

Summary and Future Directions