In the business, customer, end-user sense, in many situations, you are much better off to have a transaction fail with an error as opposed to finally successful

In the business, customer, end-user sense, in many situations, you are much better off to have a transaction fail with an error as opposed to finally successfully happening after 2 hours once a service disruption is cleared. Every problem is not the same. Work queues introduce a magnitude or more of complexity to an http application. Sometimes that is very needed. Sometimes its overengineering. Sometimes it is a gray area.