Is it possible to check existence of persistent entity by it's id?

Akka Libraries Persistence / Event Sourcing
1

Hello.

I have a persistent entity, and in my use-case I need to handle a lot of requests with ID that do NOT represent an existing entity.

There are millions of entities with unique ID. And just about 0.01 % of regular IDs are managed by my application and have a persistent entity instance in a DB. So I’m looking for the best way how to check if an ID represents an existing entity (managed by my app). So in this case I do not need to restore the whole entity from DB from snapshot and events. I just want to check if the ID is ours or not.

Is there a low-level API to just check the ID? True/False response is ok in the use case. Or, what is your architecture recommendation on handling such cases?

Thanks,
Libor

PS: I use AWS Keyspaces DB.

2

Public API specifically for that no. Best solution would probably be to do your own query against the database journal table for just the existence of any event for a given persistence id.