There's a nice-looking series of exercises from fly.io: https://fly.io/dist-sys/ https://fly.io/dist-sys/ (I haven't actually done them myself yet, but they lo

There's a nice-looking series of exercises from fly.io: https://fly.io/dist-sys/ https://fly.io/dist-sys/ (I haven't actually done them myself yet, but they look great. Not a standalone resource, but good for practice)