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

Foundations of Domain-Driven Design

• The underlying principles and rationale for adopting DDD
• Establishing a ubiquitous language and collaborating effectively with domain experts
• Identifying core, supporting, and generic subdomains

Strategic Design and Managing Bounded Contexts

• Defining the scope and responsibilities of bounded contexts
• Utilizing context mapping and integration patterns
• Navigating team structures, organizational boundaries, and data ownership issues

Tactical Patterns — The Foundation of the Domain Model

• Managing entity identity and behavior
• Leveraging value objects and ensuring immutability
• Defining aggregates and establishing transaction boundaries

Implementing Domain Services, Repositories, and Factories

• Determining when to use domain services versus application services
• Applying repository patterns and considering persistence strategies
• Using factory patterns for the creation of complex objects

Modeling Complex Behaviors and Enforcing Invariants

• Designing invariants to uphold strict business rules
• Employing event-driven modeling and domain events
• Applying consistency models, including eventual consistency and sagas

Aligning DDD with Architecture and Engineering Standards

• Aligning DDD structures with microservices and modular monoliths
• Designing APIs, implementing anti-corruption layers, and planning integration strategies
• Testing domain logic through unit tests, integration tests, and contract tests

Implementing DDD Across Teams and Organizations

• Conducting domain discovery workshops and Event Storming sessions
• Building and maintaining a consistent ubiquitous language across teams
• Tracking success metrics and iteratively refining the domain model

Conclusion and Future Directions