[Freeswitch-users] Shared Rate Limiting?

How do I enforce a calls per second across multiple FS machines? I can do a concurrent limit with the DB backend, that can be synced together (or be the same endpoint) but the wiki says that won't work for interval. I see a hash_remote feature, but does that only read, not increment. Perhaps the redis backend supports interval? Then I can have redis do replication. I haven't done any testing yet, it seems I'd just be stabbing in the dark. -Avi