Akka Persistence FoundationDB plugin development

Akka Persistence / Event Sourcing
1

Greetings hakkers!

I’m developing an akka-persistence plugin which will use FoundationDB as a storage.

Since FoundationDB supports transactions, I was thinking about implementing a safeguard to prevent simultaneous journal writes in a split-brain scenario. However when I read the akka-persistence journal code, I didn’t find an interface to propagate a failure back to a single persist call (and shut it down afterwards) without failing the whole AtomicWrite batch (and triggering the journal’s circuit breaker).

Is it possible to do that in the current akka-persistence release?

1 Like
2

I think you should fail the whole AtomicWrite. That comes from one PersistentActor and is the one you will stop by failing the writes. There is no batching across different PersistentActors.

3

Thanks, Patrik!