As per the latest documentation of Hangfire, MySql is not listed. you are probably constrained to use either Redis or MSSQL (SQL Server) . See https://docs.hangfire.io/en/latest/configuration/index.html

Alternatively if you want to, you could write your own custom configuration if it is worth is another question.

Or you can also use some community supported storage https://www.hangfire.io/extensions.html#storages