[rabbitmq-discuss] Messages that can never touch disk

Thu May 8 08:46:37 BST 2014

On 08/05/2014 05:26, Garrett Johnson wrote:
> Hello all — I have a question about making sure a message NEVER hits
> disk. Assuming the messages are not published as persistent (duh) and we
> cancel connections at a given memory threshold rather than paging to
> disk, what else is there to keep in mind?

Assuming this is broker-wide, you would want to set 
vm_memory_high_watermark_paging_ratio to some large number. You should 
not need to cancel connections if you do that.

> If it is even possible, can you still mirror the queues in a cluster?

HA is still fine; it's orthogonal to persistence.

Cheers, Simon