|This feature was removed completely in version 1.33.0.|
|Fudge time to add to cache timestamps to adjust for clock skew.
|移除版本：||1.33.0 (Gerrit change 496694; git #074ce9ab)|
|其他设置： 按首字母排序 | 按功能排序|
Clock skew or the one-second resolution of
time() can occasionally cause cache problems when the user requests two pages within a short period of time.
This variable adds a given number of seconds to vulnerable timestamps, thereby giving a grace period.