implement-ddd-aggregate

What problem does it solve?

This Skill provides a structured blueprint for building Domain-Driven Design aggregates following Clean Architecture, ensuring invariants, events, and clear boundaries are enforced in the domain model.

Core Features & Use Cases

• Value objects and invariants: Define immutable value objects with validated constructors to enforce business rules.
• Domain events and aggregates: Implement an aggregate root that raises events and maintains consistency boundaries.
• Repository port and use cases: Outline a port for persistence and an application service to orchestrate use cases.
• Use-case oriented workflows: Use cases coordinate loading, executing domain logic, and persisting results in a transaction-like boundary.

Quick Start

Provide a domain problem with clear business rules, then follow the steps to implement the aggregate, load it via a repository, apply commands, and persist events.