I know that Tomcat uses "Farm" deployments, but they're not
the same as Liferay's.
Liferay has no means to implement parallel deployments. You'll have
to do that on your own, fully depending on your setup and policies.
There are customers who never hot-deploy into a running server. If
they're using Docker, they use reproducible builds, so that they are
always sure which exact software they have running. DXPCloud does the
same. While this way deployment requires a restart, the
reproducibility are deemed to be worth it.
If you want to implement your own filecopy/synchronization: Go ahead.
How you do it will depend on your individual deployment situation.
