{
  "dir": "TB",
  "nodes": [
    {
      "id": "CLU",
      "label": "服務叢集",
      "cls": "blueG"
    },
    {
      "id": "NS1",
      "label": "訂單命名空間",
      "cls": "greenG",
      "group": "CLU"
    },
    {
      "id": "NS2",
      "label": "帳務命名空間",
      "cls": "greenG",
      "group": "CLU"
    },
    {
      "id": "SG1",
      "label": "訂單服務群",
      "cls": "orangeG",
      "group": "NS1"
    },
    {
      "id": "SG2",
      "label": "庫存服務群",
      "cls": "orangeG",
      "group": "NS1"
    },
    {
      "id": "SG3",
      "label": "帳務服務群",
      "cls": "orangeG",
      "group": "NS2"
    },
    {
      "id": "o1",
      "label": "訂單 API",
      "cls": "orange",
      "group": "SG1"
    },
    {
      "id": "o2",
      "title": "訂單背景任務",
      "items": [
        "排程掃描",
        "失敗重試"
      ],
      "cls": "orange",
      "group": "SG1"
    },
    {
      "id": "i1",
      "label": "庫存 API",
      "cls": "orange",
      "group": "SG2"
    },
    {
      "id": "i2",
      "label": "庫存快取",
      "cls": "orange",
      "group": "SG2"
    },
    {
      "id": "p1",
      "title": "付款服務",
      "items": [
        "扣款",
        "對帳"
      ],
      "cls": "orange",
      "group": "SG3"
    },
    {
      "id": "p2",
      "label": "帳務 API",
      "cls": "orange",
      "group": "SG3"
    },
    {
      "id": "GW",
      "label": "API 閘道",
      "cls": "purple"
    },
    {
      "id": "MQ",
      "label": "訊息佇列",
      "cls": "purple"
    }
  ],
  "edges": [
    {
      "from": "GW",
      "to": "NS1",
      "label": "路由請求"
    },
    {
      "from": "GW",
      "to": "NS2",
      "label": "路由請求"
    },
    {
      "from": "SG1",
      "to": "SG2",
      "label": "查詢庫存"
    },
    {
      "from": "SG1",
      "to": "MQ",
      "label": "發布訂單事件",
      "kind": "dashed"
    },
    {
      "from": "SG3",
      "to": "MQ",
      "label": "訂閱付款事件",
      "kind": "dashed"
    },
    {
      "from": "o1",
      "to": "i1",
      "label": "扣減庫存"
    },
    {
      "from": "p1",
      "to": "p2"
    }
  ]
}