Ask HN: Resources to learn boring architecture for a small startup?

The title might sound dumb, but the real goal is to learn more and eventually get better at simple system designs like in the terrific posts below: https://www.listennotes.com/blog/the-boring-technology-behind-a-one-person-23/ https://anthonynsimon.com/blog/one-man-saas-architecture/ There are a lot of resources on distributed systems and interview preparation where the focus is on FAANG scale, distributed setups, exobytes of data, which is cool if you are working on such a project but most likely you are not. I am not, for example. I really admire these articles because their authors have such a great understanding of many different aspects of development. While reading them, I noted to myself that I personally can't even answer with confidence what a single reasonably fat server can handle with just a web server and Postgres. I have also always worked with managed DBs because it so happened that the companies I worked for are act