{ "development":
  { "driver":   "redis"
  , "host":     "localhost"
  , "database": 2
  }
, "test":
  { "driver":   "redis"
  , "host":     "localhost"
  , "database": 1
  }
, "production":
  { "driver":   "redis"
  , "host":     "localhost"
  , "database": 0
  }
}