I build a new auth system about once a year.

That’s a weird hobby, but, it’s, like, incidental to the actual hobby: I start a lot of projects using new technologies, and the first thing I have to figure out in these new technologies is always auth.

And every time I do, after I’ve got most of auth working, I have to figure out why my test suite takes 500+ms to run per test, despite my using an all-local stack of generally pretty performant technologies - in fact, a lot of the time it feels like the more modern and performant my stack is, the slower all of these tests are.