Invariants should define consistency boundaries
DDD Aggregates: Consistency Boundary - James Hickey
A consistency boundary helps us when we have business rules in our software that span multiple objects or have high contention. Let’s dig down a bit deeper!
Post author By jamesmh
- Define your invariants! What properties within your domain must always be true? Write these down somewhere.
- Invariants should then drive consistency boundaries.
If you are trying to split up consistency boundaries, invariants shouldn't straddle a consistency boundary!