Mnesia stores vhosts, users, permissions, queue definitions and more. This is being transitioned to Khepri, which improves a lot of things (maybe most importantly netsplits) but not directly message speeds.
Does RabbitMQ have equivalent features?
If you haven’t seen it, there is an interview with the guy who put those presentations together for 20 years. It’s pretty interesting.
https://web.archive.org/web/20210205063616/https://www.cake....
[0] https://writings.stephenwolfram.com/2023/09/remembering-doug...
Wolfram provides a free Mathematica called Wolfram Engine https://www.wolfram.com/engine/. It's Mathematica without the UI. I hear you can combine it with Jupyter Notebook to get a similar experience to Mathematica.