m09-domain

Domain modeling in Rust maps concepts like entities and value objects to ownership patterns with proper invariants. Entities receive unique IDs, while value objects are immutable and compared by value, enforced through guarded constructors that validate data before instantiation.

Defining aggregate boundaries in Rust involves classifying aggregate roots, grouping related entities and value objects, and enforcing consistency rules within those boundaries. This approach ensures clear ownership semantics and maintains valid state across domain events and repository interactions.

Rust ownership applies to DDD by distinguishing between owned data within an aggregate root and shared references across boundaries. This model uses Rust's borrow checker to enforce invariant rules at compile time, preventing invalid state mutations and ensuring scalable, correct designs.

Use domain events in Rust domain modeling to decouple aggregate roots and signal state changes across service boundaries. They provide a clear audit trail and allow downstream modules to react to invariant changes without creating tight coupling between separate domain repositories.

Enforcing domain invariants in Rust uses guarded constructors that validate all business rules before returning a valid entity or value object instance. This pattern leverages Rust's type system to make invalid states unrepresentable, ensuring data integrity throughout the aggregate lifecycle.