Deploy to multiple machines in parallel

Hi,

right now we are using an scp task to copy our built artifact to our servers and an ssh task to unpack and restart the processes on the servers. But for what we can see the tasks can only run in series.

Unfortunately for many servers this does not scale well. With a lot of traffic our servers need some time to finish the restarts because it has to wait for all connections to close. It would be much better to be able to let the tasks of the deployment run in parallel as an option. This way we could deploy in parrallel to all servers and the deployment time would not grow linearly to the number of target servers, but would only take as long as the slowest deployment.

I hope the feature request is understandable. If you have further questions do not hesitate to contact.

Thanks
Michael