array(3) {
  ["prefix"]=>
  string(3) "am_"
  ["master"]=>
  array(3) {
    ["port"]=>
    int(6379)
    ["host"]=>
    string(9) "127.0.0.1"
    ["pconnect"]=>
    int(0)
  }
  ["slave"]=>
  array(0) {
  }
}