To improve performance of you instance, you can enable redis caching. To do this, you need to edit config.php file located in: public_html/config/config.php and add this at end of file exactly before );
'memcache.local' => '\\OC\\Memcache\\Redis',
'redis' =>
array (
'host' => '127.0.0.1',
'port' => 6379,
),
'memcache.locking' => '\\OC\\Memcache\\Redis',