perusio

    # Balancing over 4 nodes by hashing URI (consistently with md5) 
    # onto 16 shards. 

    upstream x0 { server 192.168.0.2;  server 192.168.0.3 backup; }
    upstream x1 { server 192.168.0.2;  server 192.168.0.4 backup; }
    upstream x2 { server 192.168.0.2;  server 192.168.0.5 backup; }
    upstream x3 { server 192.168.0.2;  server 192.168.0.3 backup; }

    upstream x4 { server 192.168.0.3;  server 192.168.0.4 backup; }