nic-6443 commented on code in PR #12872:
URL: https://github.com/apache/apisix/pull/12872#discussion_r2674735702


##########
apisix/plugins/limit-req/util.lua:
##########
@@ -68,6 +68,10 @@ function _M.incoming(self, red, key, commit)
         if not ok then
             return nil, err
         end
+
+        local ttl = math.ceil(self.burst / self.rate) + 1
+        red:expire(excess_key, ttl)
+        red:expire(last_key, ttl)

Review Comment:
   I think one second is enough for limit-req



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