I have read that If a consumer takes a message and does not acknowledge that it has been successfully processed within a given time window, then another consumer is given the same message to guarantee "at-least-once" delivery and I have seen this happening in our production as well.
But I would like to know is there any flag through which we can configure the time interval and only when that time period crosses re-attempt the delivery to an another consumer.
I did a lot of search but couldn't find any such flag, so if anyone who has used this property earlier, please do let me know about it.
Thanks
then another consumer is given the same message to guarantee "at-least-once" delivery
That is not true; the message remains in an un-ack'd state until the consumer acks or nacks it, or the connection to that consumer is lost; at which time the message becomes availabe to be sent to another consumer.