| Domain Concept | Rust Pattern | Ownership Implication |
| Entity | struct + Id | Owned, unique identity | | Value Object | struct + Clone/Copy | Shareable, immutable | | Aggregate Root | struct owns children | Clear ownership tree | | Repository | trait | Abstracts persistence | | Domain Event | enum | Captures state changes | | Service | impl block / free fn | Stateless operations |
| Entity vs Value Object | domain- | What makes two instances "the same"? | | Aggregate boundaries | domain- | What must be consistent together? | | Validation rules | domain- | What business rules apply? |
CRITICO: utilizzare per la modellazione di domini. Trigger: modello di dominio, DDD, progettazione basata sul dominio, entità, oggetto valore, aggregato, modello di repository, regole di business, convalida, invariante, 领域模型, 领域驱动设计, 业务规则 Fonte: goooice/rust-skills.