Is it possible to ensure that the message will not be lost when the topic has no consumers

[qcjxberin]

Is it possible to ensure that the message will not be lost when the topic has no consumers

[biapar]

Use qos 1 or 2 and retain messages option.

[chkr1011]

@qcjxberin You can attach to the event ApplicationMessageNotConsumedAsync. It is fired whenever a message was not consumed by any client.