It's good that you explained how it's used from a practitioner's perspective based on your experience :) This is a typical example of a good server developer^^

groundp

Learn the core HTTP features essential for practical use and how to design proper HTTP APIs.

인프런 10주년! 사랑주간 전체 할인

HTTP Web Basics for Every Developer

입문

초급

중급이상

Network

Introduction

Internet network

URI and Web Browser Request Flow

HTTP Basics

HTTP Methods

Using HTTP Methods

HTTP Status Code

HTTP Header 1 - General Header

HTTP Headers 2 - Cache and Conditional Requests