$config['cache']['enabled'] = true;
$config['cache']['frontend'] = 'Core';
$config['cache']['frontendOptions'] = array(
'caching' => true,
'automatic_serialization' => true,
'lifetime' => 1800,
'cache_id_prefix' => 'xxx_xf'
);
$config['cache']['backend']='Memcached';
$config['cache']['backendOptions']=array(
'compression'=>false,
'servers' => array(
array(
'host'=>'127.0.0.1',
'port'=>11211,
)
)
);
$config['cache']['cacheSessions'] = true;