After listening to various things, I ended up paying for Kim Young-han's lecture because it was easy to listen to and all the lectures felt connected and integrated. 

It was good to hear the organized content about HTTP, 
but it would have been good if there were actual coding examples for the cache part.

thub

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

Thank you DEVOCEAN. You can understand what you learned in the next lecture, Spring MVC, through code again^^!

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