bzp2010 commented on a change in pull request #6318:
URL: https://github.com/apache/apisix/pull/6318#discussion_r810746558



##########
File path: docs/en/latest/plugins/prometheus.md
##########
@@ -93,6 +93,20 @@ Then add prometheus plugin:
 
 We fetch the metric data from the specified url `/apisix/prometheus/metrics`.
 
+First you need to setup the route for the metrics API, which will use the 
[public-api](public-api.md) plugin.
+
+```shell
+$ curl http://127.0.0.1:9080/apisix/admin/routes/p -H 'X-API-KEY: 
edd1c9f034335f136f87ad84b625c8f1' -X PUT -d '
+{
+    "uri": "/apisix/prometheus/metrics",
+    "plugins": {
+        "public-api": {}
+    }
+}'
+```
+
+Then, we can get the metrics.

Review comment:
       I think now that we have introduced `public-api` plugin, can we reduce 
the existence of APIs with special configuration items on these plugins and let 
users give priority to using public-api plugin to realize similar functions, 
such as `prometheus` plugin and `batch-requests` plugins.
   
   




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