Not the OP, but this looks like it's designed to be lossy, and prioritize availability over deliverability. If clients are unable to keep up with message volume

Not the OP, but this looks like it's designed to be lossy, and prioritize availability over deliverability. If clients are unable to keep up with message volume, messages will be dropped. That makes is okay for things like realtime dashboards (which this is apparently designed for) and other rapid events where transactionality is not required. But it's obviously not suited for job-like scheduling like data processing or email delivery. Nor as an event bus for inter-service coordination ("on event X, do Y").