Does a Redis pub/sub channel construct store the messages published in the channel if nobody is subscribed?

[portante]

Does a Redis pub/sub channel construct store the messages published in the channel if nobody is subscribed?

If it does, then we really have a problem with potential crud in the channel. Before we start an instance the channels need to be flushed.

If it doesn't, then we'll never receive a response because the published message would have been dropped and we should just return immediately after posting the error.

Originally posted by @portante in #2005 (comment)