Proposed solution 1 seems sensible and using acknowledgements and dlq is a fairly common pattern. You might also want to monitor the size of the DLQ and if it r

Proposed solution 1 seems sensible and using acknowledgements and dlq is a fairly common pattern. You might also want to monitor the size of the DLQ and if it reaches a certain limit stop processing altogether. You can also alert based on the size of the queue. Don't forget a mechanism to redrive back from the DLQ and consider if order is important (might be if you're using a FIFO queue, but unsure as to whether Rabbit supports that)