json_schema: {
      "properties": {
          "settings": {
              "properties": {
                  "nodes": {
                      "items": {
                          "host": {
                              "type": "string"
                          },
                          "port": {
                              "type": "integer"
                          },
                          "required": [
                              "host",
                              "port"
                          ]
                      },
                      "minItems": 1,
                      "type": "array"
                  }
              }
          }
      },
      "required": [
          "settings"
      ],
      "title": "CacheSettings",
      "type": "object"
  }