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i am new vps starter , how to install and enable memcached for wordpress on LEMP Ubuntu 14.04?
I have succeed to install the memcached for the server according to https://www.digitalocean.com/community/tutorials/how-to-install-and-use-memcache-on-ubuntu-12-04
but for wordpress , I install the plugin "Memcached Object Cache" , and Copy object-cache.php to wp-content, met a Fatal error: Cannot redeclare class WPObjectCache in /var/www/html/wp-content/plugins/memcached/object-cache.php on line 93 , and the web is erro 500. when remove it from wp-content, the web working normally.
how to solve this problem?
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