Redmine

Any news? This is getting more troublesome each day as we are now 18 months away from MySQL's 5.7 official EOL date, more than a year after MySQL 5.6 has been officially depreciated, and still there's nothing on the roadmap. Maybe it'd be better to officially depreciate MySQL support and provide a migration path to PostgreSQL?

We have been running Redmine on MySQL 8.0 for more than 1.5 years without any problems. The deadlock problem described in #17460 has never occurred.

Thank you, that is good news. How man active concurrent users do you have?

I'm not sure, but I know that at certain times of the day we have about 200 to 300 ticket edits per hour.

I wonder why no progress can be seen on this important point in particular - especially in connection with the fifth generation of Redmine.
MySQL 5.5 and 5.6 have been EOL for a long time, the end of 5.7 is in the near future (October 2023). Nevertheless, version 5.5 is presented as the best choice in the installation wiki - version 8.0 is not even mentioned.
Ok, MySQL is not what it used to be - so I can understand if there is no further development here - we also have an alternative ;)
However, the "official" support of MariaDB is missing - I only know from experience that I have never had any problems in connection with MariaDB 10.x.

My investigations show

According to https://www.redmine.org/projects/redmine/wiki/Continuous_integration
the tests are running on mysql 5.7

Here are the results of the testsuite
https://www.redmine.org/builds/

This is confusing. Are the tests successful or are the tests skipped? Is mysql 5.7 supported or not. I find it especially confusing that the test suite is run with 5.7.

I also use MySQL 8.0 in my test environment for a long time.

I believe that MySQL 8.0 should be added to the supported databases, with the notice that the issue described in #17460 may occur.