Any idea why this isn't working? Occasionally throws an unexpected error without dumping anything into logs, and the cache shows zero attempts/hits. The memcached module is compiled/enabled on both web servers and working just fine in other applications...
	
	
	
		
				
			
		Code:
	
	$config['cache']['enabled'] = true;
$config['cache']['frontend'] = 'Core';
$config['cache']['frontendOptions'] = array('caching'  =>  true,
  'automatic_serialization' => true,
  'lifetime'    => 1800,
  'cache_id_prefix' => 'xffe_',
);
$config['cache']['backend'] = 'Memcached';
$config['cache']['backendOptions'] = array(
    'backendOptions'=>array(
            'servers' =>array(
                            array(
                                'host' => '<snip server1>',
                                'port' => 11211
                            ),
                            array(
                                'host' => '<snip server2>',
                                'port' => 11211
                            ),
                            array(
                                'host' => '<snip server3>',
                                'port' => 11211
                            ),
                            array(
                                'host' => '<snip server4>',
                                'port' => 11211
                            ),
                        ),
            'compression' => false
    )
);