nginx下碰到
No memory cache has been configured. To enhance your performance please configure a memcache if available. Further information can be found in our documentation.
的解决办法：在config/config.php里添加
'memcache.local' => '\OC\Memcache\APCu',
来源：https://manandkeyboard.wordpress.com/2015/08/01/owncloud-8-1-security-setup-warnings/