Persistent session are awesome when developing, saving the developer time to re-login after restarting his modeler. YES!
Is this save to use this in production on the latest version of Mendix? Allows you deploy while users stay logged in.
https://world.mendix.com/display/refguide6/Keep+alive+mechanism+for+Persistent+Sessions
The documentation describes in solution for a performance bottle neck...
However in the Custom Settings only describes warnings:
https://world.mendix.com/display/refguide6/Custom+Settings
So what will be the real impact on using this option in production?