[
  {
    "name": "dummy1",
    "upstreams": [
      "10.0.0.1",
      "10.0.0.2",
      "10.0.0.3"
    ]
  },
  {
    "name": "dummy2",
    "upstreams": [
      "127.0.0.1",
      "127.0.0.2"
    ]
  }
]