Psmq plugin usable as message queue for plugin development or alternatives

Hi,

it seems like the https://bitbucket.org/atlassian/psmq repo was forked and isn’t available anymore.
As I can see, the plugin is now part of JSD and my question is if it is usable as a message queue for a new plugin. We want to put messages in the queue that are collected by an external app and the external app is also putting messages in the queue for our Jira plugin.

Does anybody has experience with the simple integration of another message queue in a plugin?

Cheers
Christian