HTTP: HTTP/2

Over the years, as websites became more complex and user expectations grew, the need for faster and more efficient data transfer became evident.

HTTP has recently seen big changes, in particular we had HTTP/2 and HTTP/3, which offer several benefits.

Let’s see first HTTP/2 and then HTTP/3.

HTTP/2 was the second major version of the HTTP protocol, designed to enhance web performance and efficiency. Not a replacement for the original HTTP protocol, but rather an improvement upon it.

HTTP/2 is 100% backwards compatible with HTTP/1.1

There are several key advantages of using HTTP/2 over HTTP:

Faster Load Times: Due to its ability to handle multiple requests for data simultaneously, websites using HTTP/2 can load faster than those using HTTP/1.

Efficient Connection: HTTP/2 requires fewer connections to the server, as it can send multiple streams of data over a single connection. This results in reduced strain on server resources.

Stream Prioritization: HTTP/2 allows servers to send important data first, ensuring that the most critical content reaches the user promptly.

Enhanced Security: Often used with HTTPS, HTTP/2 promotes more secure web browsing by safeguarding data transmission between the browser and server.

Lessons in this unit:

0:	Introduction
1:	An HTTP request
2:	HTTP Methods
3:	HTTP Status Codes
4:	HTTP Client/Server communication
5:	HTTP Request Headers
6:	HTTP Response Headers
7:	HTTPS
8:	▶︎ HTTP/2
9:	HTTP/3

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