How the web actually works: requests, responses, methods, status codes, headers, and caching.
Every interaction on the web is a request from a client and a response from a server. Understand the anatomy of both.
GET, POST, PUT, PATCH, DELETE and friends each declare an intent. Learn what every method means and when to reach for it.
Every HTTP response carries a three-digit status code that says how the request went. Learn the five classes and the codes you will actually meet.