From ef8f6172bb95ff1eb164103fcd6f3ca83f27f14d Mon Sep 17 00:00:00 2001
From: Carsten Brandt <mail@cebe.cc>
Date: Fri, 16 Feb 2018 04:34:38 +0100
Subject: [PATCH] Added a note about URLManager cache duration

https://github.com/yiisoft/yii2/pull/13426#issuecomment-366078957
issue #13426
---
 framework/web/UrlManager.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/framework/web/UrlManager.php b/framework/web/UrlManager.php
index 4509f93182..5ad3da1eae 100644
--- a/framework/web/UrlManager.php
+++ b/framework/web/UrlManager.php
@@ -124,6 +124,10 @@ class UrlManager extends Component
      * After the UrlManager object is created, if you want to change this property,
      * you should only assign it with a cache object.
      * Set this property to `false` if you do not want to cache the URL rules.
+     *
+     * Cache entries are stored for the time set by [[\yii\caching\Cache::$defaultDuration|$defaultDuration]] in
+     * the cache configuration, which is unlimited by default. You may want to tune this value if your [[rules]]
+     * change frequently.
      */
     public $cache = 'cache';
     /**