[Question] Multiple domains about eventhorizon

[maxekman]

There is currently no way to listen to when a projection has actually happened. This can be seen as a drawback, but at the same time I would be VERY careful of using the read models in any business logic.

I can see two alternatives:

1. Use a saga that listens to the domain events for Products and Attributes and sends appropriate commands to sync whatever state needs to be synced, totally ignoring the read models.
2. Make the Attribute into a value object on the Product. The fewer aggregate (roots) you have the fewer synchronisation issue there will be.

When the outbox pattern eventually gets implemented (for other reasons; atomicity etc) it might be possible to get notified when projections are done.

Hope this helps!

[LiorF-BDBQ]

Thanks!