Nextcloud version : 27.0.1
Operating system and version : Linux 5.10.0-22-amd64 x86_64
Apache or nginx version : PostgreSQL 13.11 (Debian 13.11-0+deb11u1) on x86_64-pc-linux-gnu, compiled by gcc (Debian 10.2.1-6) 10.2.1 20210110, 64-bit
PHP version : 8.2.8
mydomain.tld/index.php/settings/admin/overview told a warning: The database is used to lock transaction files. To improve performance, please set up Memcache if available.
I think this warning has appeared first after the upgrade from NC 25.x to NC 26.
So, I have enabled APCu. When I enter php -m I can see that apcu is being loaded. In config.php I have added ‘memcache.local’ => ‘\OC\Memcache\APCu’,. But nevertheless, the warning remains.
What do I have to configure my NC to make the warning disappearing, i.e. for improving the performance as suggested?
You have filled out the support template incompletely. Please describe your system better. Are you on Debian/Ubuntu? Do you use apache2, nginx or even other webserver? Is it a Virtual Machine, a Docker image, AIO? Shared host etc.
It is a virtual machine, a so called Webhosting account at hetzner.com . As far as I understand it, it is an apache server. But for true, I do no really know whether it is an apache or an ngingx server. Can I figure it out by an CLI command?
And that is the reason why there is a support-template (which you did not fil btw).
Contact the hetzner support. They know your setup and can give you all the information you need.
If you don’t even know what webserver is in use, did you set up nextcloud yourself?