Upgrade to Nextcloud 31
System requirements
PHP 8.1 is now deprecated but still supported.
PHP 8.4 is now supported, but 8.3 is recommended.
Database configuration
Other row formats than DYNAMIC for MySQL and MariaDB databases will issue a warning since Nextcloud 24,
as they often cause performance issues.
With Nextcloud 31 a more prominent new setup warning for this was added.
To resolve the warning, in most cases running occ db:convert-mysql-charset will resolve the issue.
If some tables are not covered by the occ command, issuing the proper ALTER TABLE DDL commands to change the row format during a maintenance window is needed.
If you’re not sure how to do this, you can find some tips and tricks from the community.
PHP configuration
We have a new setup warning to check if the memory reserved for APCu is high enough.
If you see this warning, you should increase the memory reserved for APCu.
You can do this by increasing the value of the apc.shm_size directive in your php.ini file.
It is generally advised to review this value and increase it if necessary depending on your instance size.
Nextcloud configuration
Maximum chunk size
We have adjusted the default maximum chunk size for big file uploading. Previously it was set to 10MiB, it is now increased to 100MiB.
Also the configuration was moved from an app configuration to the system configuration (config.php).
If you set up a custom value previously the value will be automatically migrated to the system configuration during the update.
But if you need to set a new custom value you need now to use the system configuration, see also Adjust chunk size on Nextcloud side.