[Thaxll]

One of the great thing about message queue is that it allows you to upgrade/update things downstream without loosing information. Work will be delayed but it will be done at some point.

[zihotki]

That's highly underestimated benefit of message queues. In addition to that it's also easy to mirror the queue and test new version in parallel with current.

[Spivak]

And issues manifest as queue backups which a can turn what would otherwise be downtime into “the app is a little slow today.”

Would never ever architect an app in production without leaning heavily on queues because it makes so many of the hard parts trivial.