tl;dr:"The intention of this post is not to shit on MongoDB. They specifically forbid the steps I am about to explain. This post is a chronicle of my curiosity, exploration, and fun learning experience."
tl;dr:Avinash discusses how far he's gotten in attempting to building a 4 column DB with a billion rows in under a minute using Python and Rust scripts, with the following compromises: (1) lack of durability i.e. crashing is fine. (2) Can use machine resources to the fullest. (3) Can use pseudo-random methods from stdlib.