Is there any good courses that cover the more technical aspects of backend development? Here are some examples, not even limited to this, but I want to hear more than the basics and also some security things to look out for in like a yt video or something, potentially includes, CORS, Cookies, JWT, server side sessions, server side rendering, websockets, server side events, html patterns (e.g the backend returning html components to be place into the browser). Status Codes, GET and POST, GRPC, file transfers.