Comment by codys

> I am assuming the message durability guarantees lean towards YOLO rather than ACID?

"Core" nats doesn't have durability. Nats jetstream is the api built on top of nats that in the main nats-server impl provides durability. Jepsen tested Nats Jetstream.

Also from your link:

> Regular NATS streams offer only best-effort delivery, but a subsystem, called JetStream, guarantees messages are delivered at least once.

The project linked here does not implement the nats jetstream api, just normal nats.

So yes, it seems its same (documented, understood) "yolo" as normal nats.