{
  "schema": {
    "bsonType": "object",
    "required": ["content", "count"],
    "properties": {
      "_id": {
        "description": "ID，系统自动生成"
      },
      "content": {
        "bsonType": "string",
        "description": "搜索内容"
      },
      "count": {
        "bsonType": "long",
        "description": "搜索次数"
      },
      "create_date": {
        "bsonType": "timestamp",
        "description": "统计时间"
      }
    }
  },
  "index": []
}