I am wondering if you setup multiple high level domains, and send repeating characters to next server.
for password abacabcda
a -> a:3000
b -> a:3000
a -> b: 4000
c -> a:3000
a -> c:5000
b -> b:4000
c -> b:4000
d -> a:3000
a -> d:6000
Or even if a single domain, but multiple subdomains with/without load balancing would work?