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

Introduction to Domain-Driven Design

• Principles and motivations behind DDD.
• Ubiquitous language and collaboration with domain experts.
• Distinguishing core, supporting, and generic subdomains.

Strategic Design and Bounded Contexts

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

Tactical Patterns — 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 use domain services versus application services.
• Repository patterns and persistence considerations.
• Factory patterns for complex object creation.

Modeling Complex Behavior and Invariants

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

Integrating DDD with Architecture and Engineering Practices

• Aligning DDD with microservices and modular monoliths.
• API design, anti-corruption layers, and integration strategies.
• Testing domain logic: unit tests, integration tests, and contract tests.

Adopting DDD in Teams and Organizations

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

Summary and Next Steps