- A client application that puts data to queue Q1
- A server application that takes data from Q1 for processing
- A client application that puts data to queue Q2
- A server application which takes data from Q2 for processing
Some time later the two server applications are merged into one application
supporting requests from both the client applications. It may now be appropriate
for the two queues to be changed to one queue. For example, you may delete
Q2,
and add an alias of the
Q1 queue, calling it
Q2.
Messages from the client application that previously used
Q2 are
automatically sent to
Q1.