Title: Object caching
Last modified: May 7, 2020

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# Object caching

 *  Resolved [sns1sns](https://wordpress.org/support/users/sns1sns/)
 * (@sns1sns)
 * [5 years, 11 months ago](https://wordpress.org/support/topic/object-caching-3/)
 * Hello,
    I am using google cloud hosting, and using 3.75 GB ram. I want to use
   memcached/redis for object caching. I followed yours docs, also the methods given
   in this link [https://docs.bitnami.com/google/apps/wordpress/configuration/install-modules-php/](https://docs.bitnami.com/google/apps/wordpress/configuration/install-modules-php/)
   but still the plugin is not able to detect these extentions. what is the exact
   method of installing these extentions on the server. I am using Debian. I am 
   using community website and so page cache is less useful and so I want object
   cache to be used. Awaiting your quick response.
    -  This topic was modified 5 years, 11 months ago by [sns1sns](https://wordpress.org/support/users/sns1sns/).

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Contributor [Marko Vasiljevic](https://wordpress.org/support/users/vmarko/)
 * (@vmarko)
 * [5 years, 11 months ago](https://wordpress.org/support/topic/object-caching-3/#post-12797373)
 * Hello [@sns1sns](https://wordpress.org/support/users/sns1sns/)
    Thank you for
   your inquiry and I am happy to assist you with this. Yes in order to be able 
   to use Redis/memcached as a caching method in W3 Total Cache you need to install
   [PHPredis extension](https://github.com/phpredis/phpredis) and [PHP memcached](https://www.php.net/manual/en/book.memcache.php).
   Everything is explained in the provided links so please follow the instructions.
   Make sure to restart the server once the installation is completed. Thank you!
 *  Thread Starter [sns1sns](https://wordpress.org/support/users/sns1sns/)
 * (@sns1sns)
 * [5 years, 11 months ago](https://wordpress.org/support/topic/object-caching-3/#post-12801050)
 * Hello,
    I have installed redis, memcached and varnish. W3 Total cache has detected
   Redis and memcached. there were some errors in installing memcached still it 
   has been detected. I want to know how can i check and verify that memcached, 
   redis and varnish are working right and correctly for the website actively. how
   to check or test their functionality. and there is no detection system for varnish!!
 *  Plugin Contributor [Marko Vasiljevic](https://wordpress.org/support/users/vmarko/)
 * (@vmarko)
 * [5 years, 11 months ago](https://wordpress.org/support/topic/object-caching-3/#post-12801201)
 * Hello [@sns1sns](https://wordpress.org/support/users/sns1sns/)
 * Glad to know you managed to install those modules.
    As for Redis and Memcached,
   there is a test button in the option you enabled to use it with. For example,
   Performance>Object Cache, if selected Redis there is a button to test after you
   enter the configuration. Later you can use The debug in Performance>General settings
   >Debug and enable E.G. Object Cache and you will see the HTML output when inspecting
   the source. In Performance>General settings>Reverse Proxy, you only need to check
   the Enable reverse proxy caching via varnish box and Specify the IP addresses
   of your varnish instances in Varnish servers: filed. The Varnish configuration
   language and Access control list must allow this request. Thank you!

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Object caching’ is closed to new replies.

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 * 3 replies
 * 2 participants
 * Last reply from: [Marko Vasiljevic](https://wordpress.org/support/users/vmarko/)
 * Last activity: [5 years, 11 months ago](https://wordpress.org/support/topic/object-caching-3/#post-12801201)
 * Status: resolved