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

Introduction to Domain-Driven Design

• Core principles and the motivations behind DDD
• Establishing a ubiquitous language and collaborating with domain experts
• Distinguishing between core, supporting, and generic subdomains

Strategic Design and Bounded Contexts

• Defining bounded contexts and their specific responsibilities
• Context mapping and integration patterns
• Managing organizational boundaries, teams, and data ownership

Tactical Patterns — Key Building Blocks of the Domain Model

• Entities and identity management
• Value objects and immutability
• Aggregates and transaction boundaries

Domain Services, Repositories, and Factories

• When to utilize 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 handling domain events
• Consistency models: 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: unit tests, integration tests, and contract tests

Adopting DDD in Teams and Organizations

• Facilitating 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