wangwei0326 commented on issue #13385:
URL: https://github.com/apache/apisix/issues/13385#issuecomment-4562288597

   @kyrie4899   
   
   For a normal node, after it is deleted through the dashboard, accessing the 
/v1/healthcheck endpoint 30 seconds later still returns the deleted node's 
information, but it has a purge_time. For an abnormal node, there is no 
purge_time.
   root@10-150-229-139:~# curl 
http://127.0.0.1:9090/v1/healthcheck/upstreams/619149297325179581 | python -m 
json.tool
   {
       "name": "/apisix/upstreams/619149297325179581",
       **"nodes": [
           {
               "counter": {
                   "http_failure": 0,
                   "success": 2,
                   "tcp_failure": 0,
                   "timeout_failure": 0
               },
               "hostname": "10.205.102.167",
               "ip": "10.205.102.167",
               "port": 8600,
               "purge_time": 1778580075.06,
               "status": "healthy"**
           },
           {
               "counter": {
                   "http_failure": 0,
                   "success": 2,
                   "tcp_failure": 0,
                   "timeout_failure": 0
               },
               "hostname": "10.195.26.32",
               "ip": "10.195.26.32",
               "port": 8600,
               "status": "healthy"
           },
           {
               "counter": {
                   "http_failure": 0,
                   "success": 2,
                   "tcp_failure": 0,
                   "timeout_failure": 0
               },
               "hostname": "10.195.26.33",
               "ip": "10.195.26.33",
               "port": 8600,
               "status": "healthy"
           },
           {
               "counter": {
                   "http_failure": 0,
                   "success": 0,
                   "tcp_failure": 2,
                   "timeout_failure": 0
               },
               **"hostname": "10.205.102.167",
               "ip": "10.205.102.167",
               "port": 8900,
               "status": "unhealthy"**
           }
       ],
       "type": "tcp"
   }


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