* If you wish to use the file system (cache/ directory), MemCache or eAccelerator
* you can change the value below to 'files', 'memcache' or 'eaccelerator' from 'db'.
*/
$config['cache_store'] = 'db';
header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0");
header("Cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache");