Title: Cache Issue
Last modified: August 31, 2016

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# Cache Issue

 *  [jester69](https://wordpress.org/support/users/jester69/)
 * (@jester69)
 * [10 years, 5 months ago](https://wordpress.org/support/topic/cache-issue-13/)
 * Hello,
 * I recently tried to update to 2.0 and received the following error:
 * `Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate
   71 bytes) in /home/public_html/wp-content/plugins/autoptimize/classes/autoptimizeCache.
   php on line 80`
 * I deleted it and tried re-installing it and I couldn’t even activate it.
 * [https://wordpress.org/plugins/autoptimize/](https://wordpress.org/plugins/autoptimize/)

Viewing 1 replies (of 1 total)

 *  Plugin Author [Frank Goossens](https://wordpress.org/support/users/futtta/)
 * (@futtta)
 * [10 years, 5 months ago](https://wordpress.org/support/topic/cache-issue-13/#post-6928216)
 * That actually is not a cache issue, but a memory issue jester69.
 * WordPress (the core), your theme and your plugins all need memory to be able 
   to work. Your PHP is currently configured to work with 128MB of memory but your
   site (wp core + theme + plugins) needs more and Autoptimize sadly was the last
   one to request memory (71 bytes, [in the function that clears the cache-dir](https://github.com/futtta/autoptimize/blob/master/classes/autoptimizeCache.php#L77-L85)).
   The fact that you can’t activate (guess you have a similar error) is consistent
   with this problem.
 * The solution will either be to [set a higher memory limit in your wp-config.php](https://codex.wordpress.org/Editing_wp-config.php#Increasing_memory_allocated_to_PHP)
   or to consider removing one or more plugins (possibly after [looking into memory usage as described here](http://www.stumiller.me/how-to-monitor-and-reduce-wordpress-memory-usage-by-plugins/)).
 * hope this helps,
    frank

Viewing 1 replies (of 1 total)

The topic ‘Cache Issue’ is closed to new replies.

 * ![](https://ps.w.org/autoptimize/assets/icon-256X256.png?rev=2211608)
 * [Autoptimize](https://wordpress.org/plugins/autoptimize/)
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 * 1 reply
 * 2 participants
 * Last reply from: [Frank Goossens](https://wordpress.org/support/users/futtta/)
 * Last activity: [10 years, 5 months ago](https://wordpress.org/support/topic/cache-issue-13/#post-6928216)
 * Status: not resolved