diff --git a/docs/content/routing/overview.md b/docs/content/routing/overview.md
index b49c9748b..96adbc649 100644
--- a/docs/content/routing/overview.md
+++ b/docs/content/routing/overview.md
@@ -325,6 +325,11 @@ serversTransport:
 --serversTransport.maxIdleConnsPerHost=7
 ```
 
+!!! info "Disable connection reuse"
+    
+    The default value of `maxIdleConnsPerHost` is 2, and the zero value is the fallback to the default (2).
+    If you want to disable connection reuse, set `maxIdleConnsPerHost` to -1.
+
 ### `forwardingTimeouts`
 
 `forwardingTimeouts` is about a number of timeouts relevant to when forwarding requests to the backend servers.