|Fudge time to add to cache timestamps to adjust for clock skew.
|Introduced in version:||1.4.6 (r9403)|
|Removed in version:||still in use|
|Allowed values:||No. of seconds (integer)|
Clock skew or the one-second resolution of time() can occasionally cause cacheproblems 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.