Title: Problematical
Last modified: January 12, 2023

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# Problematical

 *  [Steve](https://wordpress.org/support/users/steveatty/)
 * (@steveatty)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/problematical/)
 * It’s own diagnostics suggest that turning features on will actually slow my site
   down which seems mad.
 * Using memcached the whole site randomly goes to throwing 503 errors on the front
   but the backend seems OK.
 * Gave up and removed it.

Viewing 4 replies - 1 through 4 (of 4 total)

 *  Plugin Contributor [Marko Vasiljevic](https://wordpress.org/support/users/vmarko/)
 * (@vmarko)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/problematical/#post-16367495)
 * Hello [@steveatty](https://wordpress.org/support/users/steveatty/)
 * Thank you for your review.
   Yes, we do have information that some features may
   actually hurt the website’s performance or styling. It would be very irresponsible
   for a plugin as big as W3 Total Cache, not to have this kind of information. 
   The reason behind this is that we cannot tell which server, theme, or plugins
   someone is using.So if someone is on a shared hosting with limited resources 
   and using for example Object Caching or Database caching with Disk caching method,
   you are most likely to experience issues with the performance.
 * Every vehicle has a manual on which gas it runs on and if you put a different
   type of fuel you can potentially hurt the car engine. 
   Regarding the problem 
   you experienced with Memcached and the 503 error, It would be great if you could
   check the debug_log as those errors are logged so we can determine the cause 
   of the problem.I am running several instances using Memcached for different features(
   Page Cace. Object Cache, Database Cache) and I’ve had no issues regarding 503
   errors. Since I am not seeing any support topic opened for this, it would be 
   great if you could provide the information or reach out to us directly, as we
   are more than happy to assist you in identifying the problem.Thanks!
 *  Thread Starter [Steve](https://wordpress.org/support/users/steveatty/)
 * (@steveatty)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/problematical/#post-16367827)
 * It works – for a while, then just starts throwing 503 errors. Removing the plugin
   fixes the issue. It seems to be related to fastcgi connect errors :
 *     ```wp-block-code
       [client 192.168.0.2:60744] AH01067: Failed to read FastCGI header
       Connection reset by peer: [client 192.168.0.2:60744] AH01075: Error dispatching request to :
       ```
   
 * I’m running php_fpm via a socket and apache running mpm_event.
 * I was only trying memcached and your plugin because of the annoying “You should
   use a persistent object cache” message in the site health page.
 *  Plugin Contributor [Marko Vasiljevic](https://wordpress.org/support/users/vmarko/)
 * (@vmarko)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/problematical/#post-16400803)
 * Hello [@steveatty](https://wordpress.org/support/users/steveatty/)
 * First of all, I am sorry it took me so long to reply back as I did not receive
   the notification for this.
 * Seeing the error you shared, the error means that when Apache was communicating
   with PHP-FPM, the PHP process did not respond properly. This is why you should
   have opened the support topic. This may be an annoying error, however, you pointed
   out that the problem is related to Memcached, so the obvious is that this is 
   a Buggy PHP Extensions, and this may happen depending on the version. The solution
   is to remove and reinstall the proper version of the PHP extension and restart
   PHP.
   Once again I am sorry for any inconvenience and I hope you will reconsider,
   and use W3 Total Cache again, now with proper instructions on the possible problems.
 * Thanks!
 *  Thread Starter [Steve](https://wordpress.org/support/users/steveatty/)
 * (@steveatty)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/problematical/#post-16401139)
 * “Buggy” version of the memached extension? All installed from the stock repository.
   It’s moot as I’ve de-installed your plugin and memcached.

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘Problematical’ is closed to new replies.

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 * 4 replies
 * 2 participants
 * Last reply from: [Steve](https://wordpress.org/support/users/steveatty/)
 * Last activity: [3 years, 2 months ago](https://wordpress.org/support/topic/problematical/#post-16401139)