Multiple Ferret Server support? Support for Failover?

I’m in an environment where we need multiple ferret servers for failover
and redundancy. The problem is that ferret_server.yml configuration
file only let’s you specify a single ferret server. Is there any
support for having multiple ferret servers in the ferret_server.yml? If
not, could that be added relatively easily? I would be willing to do it
if there isn’t a resource for it.