validationKey on load balanced enviornments In the Craft docs for validationKey config settings, it states that validationKey should be used in load-balanced environments.

I'm curious on how to set this up for a load-balanced site. Does each  server need a different key, or should they all share the same setting in the config?
It should be the same for every server in the load balanced environment.

You should also set the appId config setting to a consistent value for every server in the cluster as well.

I've updated the documentation for those config settings to clarify.