aggregate-design

To determine correct aggregate boundaries in DDD, apply a tactical decision tree that validates whether objects belong together or should be separated. This framework distinguishes true invariants from rules allowing eventual consistency, preventing oversized aggregates from causing performance and scalability issues.

You should separate domain objects into different aggregates when they do not share true business invariants. The framework guides this boundary validation by distinguishing strict consistency rules from business rules that can tolerate eventual consistency, preventing poorly scoped aggregates.

Handle cross-aggregate references in Go by using identity-based referencing rather than direct object references. Coordinate cross-aggregate mutations by emitting reliable Domain Events instead of distributed transactions, ensuring root-controlled mutations and scalable domain models.

Yes, this DDD aggregate design approach supports event sourcing in Go by offering prescriptive implementation patterns for event-sourced design. It provides specific guidance for identity generation and concurrency strategies to build high-performance, scalable domain models with root-controlled mutations.

Poorly scoped Domain-Driven Design aggregates cause performance and scalability issues by enforcing unnecessary transactional consistency across large object graphs. Applying invariant-testing decision trees ensures aggregate roots are correctly sized and encapsulate business logic through root-controlled mutations.