This has little to do with databases, erlang or mnesia, its just a moan against people writing ad tech.<p>mnesia is a database for the 90&#x27;s because it was written by smart people in the 80&#x27;s and like most of the rest of the otp stack was fairly under used or maintained.<p>I have a huge amount of respect for Klacke and the original authors behind a lot of this tech, however the erlang community that followed seems to suffer some cognitive dissonance around what problems it solves and how well they are doing them. It would be hard to pick a database less suitable for SMB use than a domain specific database in a niche ecosystem.