Firstsawyou commented on a change in pull request #2270:
URL: https://github.com/apache/apisix/pull/2270#discussion_r492889269



##########
File path: apisix/plugins/limit-req.lua
##########
@@ -67,7 +67,12 @@ function _M.access(conf, ctx)
         return 500
     end
 
-    local key = (ctx.var[conf.key] or "") .. ctx.conf_type .. ctx.conf_version
+    local key
+    if conf.key == "consumer_name" then
+        key = (ctx.consumer_id or "") .. ctx.conf_type .. ctx.conf_version

Review comment:
       I think the "consumer_id" here does not need to be checked whether it 
does not exist, because when the "limit-req" is bound to the "consumer", the 
"consumer_id" can definitely be obtained. When bound to "route", it defaults to 
an empty string, so that it does not affect the use of the plug-in's "key" with 
other values. What do you think?




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