{
  "algorithm" : "hash-int",
  "num"       : 4,
  "nodes"     : [
    [ {
      "host" : "127.0.0.1",
      "port" : 19010
    } ],
    {
      "host" : "127.0.0.1",
      "port" : 19011
    },
    {
      "host" : "127.0.0.1",
      "port" : 19012
    },
    {
      "host" : "127.0.0.1",
      "port" : 19013
    }
  ]
}