Configure Cache

APC / APCu

You need to edit your config.php file and the following line

   define('OSC_CACHE', 'apc');

MEMCACHE

You need to know ip and port of the machine/s where memcached service is installed and then add the following lines to the file config.php

   define('OSC_CACHE', 'memcache');
   $_cache_config[] = array(
       'default_host'      => '127.0.0.1',
       'default_port'      => 11211,
       'default_weight'    => 1
   );