This may actually solve an issue I was about to tackle, which is high-speed notification delivery. Currently I was going to do a nasty wrestle of PUB/SUB with L

This may actually solve an issue I was about to tackle, which is high-speed notification delivery. Currently I was going to do a nasty wrestle of PUB/SUB with Lists and blocking keys to try and get a cluster of message processing servers to digest notifications when they get added to the "queue". My purpose in this is notifications, as in actual push notifications for mobile/web/etc. This seems like it fits perfectly with what I had planned. Especially since this ensures message delivery instead of fire-and-forget as you mentioned. As a question though... is the XACK commands working in your current branch? Since that is key to my usage of ensuring message consumption.