After having some issues with the amount of DB queries / connections I decided to try redis for file locking with nextcloud.
Works great and performance wise it seems at least the same (i do not have enough users/traffic to be noticeable anyway to be fair)
so .. how I set it up .. first install (on Gentoo), start and add to boot default (openrc)
emerge -av dev-db/redis dev-php/pecl-redis
rc-update add redis default
By default it binds to localhost (which is fine for me) but you can change the config in
/etc/redis/redis.conf - I did not change anything from the default config.
Test it works:
The rest is just set up the config for nextcloud in config.php (according to the nextcloud docs about redis (nextcloud 19) ):
'memcache.distributed' => '\\OC\\Memcache\\Redis',
'memcache.local' => '\OC\Memcache\Redis',
'host' => 'localhost',
'port' => 6379,
'memcache.locking' => '\\OC\\Memcache\\Redis',
I made sure to restart apache in case you just installed
pecl-redis btw, since I am not sure it would find / load the new module properly. Might be optional, but for me a quick server restart is not an issue.