I get WrongExpectedVersionException when I send two requests with minimal delay in production cluster

[eventstore]

I get WrongExpectedVersionException when I send two requests with minimal delay in production cluster

[bartelink]

What code did you write? saying you're "using optimistic concurrency" is an ambiguous statement.

I suspect SELECT is not broken in this instance - everyone "uses optimistic concurrency"; the semantics are as described in the docs you reference

You might find the discussion and walkthrough I provide in this feature idea helps you think about the overall semantic and/or might help you to handle the conflicts you encounter: EventStore/EventStore#1652

[oskardudycz]

I'm closing that because of the inactivity. I'm willing to reopen it if that still occurs. To diagnose it better, we'd need more information, e.g.:

• sample append event code,
• information how you're providing version (Any, specific one, etc.),
• information if you're setting the same event id or not,
• etc.

P.S. ESDB versions 4 and 5 are out of support, and the TCP client is considered legacy. We recommend migrating to the latest versions and gRPC client.