Comment by x0x0

So basically Kafka, to provide availability guarantees, requires multi-AZ and the inter-AZ replication gets expensive. And Ursa avoids that by using object storage and probably then just talking inter-AZ?

And while I like Kafka, nobody would claim it likes being scaled up and down dynamically, so probably built-in tolerance for that as well? We ran Kafka on-prem so that wasn't an issue for us, and given the nature of the service, didn't have a lot of usage variance.

This: https://www.youtube.com/watch?v=bb-_4r1N6eg was an interesting watch, btw.