Request for Feedback: Proposal to Drop MySQL Support

[williamjallen]

CDash currently supports a choice of MySQL or Postgres for the database backend. While Laravel abstracts away many of the basic differences, it is difficult or impossible to use more complex features which differ between these two database backends while ensuring a consistent experience for end users. Kitware is considering dropping support for MySQL starting in CDash 4.0, currently scheduled for April 2025. We believe that Postgres offers better performance for typical CDash workloads, as well as a better open source ecosystem. Given that CDash uses very few MySQL-specific features, pgloader is likely sufficient for migrating most CDash databases from MySQL to Postgres.

This discussion serves as a solicitation for user feedback regarding this proposal.