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HTTP/2 and HTTP/3
In today's fast-moving world, website performance has become a major challenge if we are to offer the best possible service. user experience quality.
It was in this context that the HTTP/2 and HTTP/3 protocols were developed.
But what do these terms really mean and what are the differences between them?
In this article, we'll take a closer look at the main features of each of these protocols.
The protocol HTTP/1.1 has been the standard since 1997but it had certain limitations and performance problems. To overcome these shortcomings, the HTTP/2 protocol was developed by the IETF (Internet Engineering Task Force) and made official in 2015. Using SPDY, another protocol developed by GoogleHTTP/2's main objective was to improve performance.
Thanks to a number of technical innovations, HTTP/2 has resolved some of the problems inherent in HTTP/1.1 :
Since its official launch in 2015, HTTP/2 is now widely adopted by web servers and browsers, thanks in particular to its backward compatibility with HTTP/1.1. This means that even if a browser or server does not yet support HTTP/2, it can still communicate using the old protocol.
After HTTP/2, the web world continued to evolve and new performance and security requirements emerged. The IETF therefore launched work on a new protocol, HTTP/3, based on QUICan experimental protocol developed by Google.
HTTP/3 offers several significant improvements over HTTP/2 :
Despite its advantages, HTTP/3 also faces a number of challenges:
Development of the HTTP/3 protocol is still underway, but several browsers and web servers have already started to support itincluding Google Chrome and Firefox. The specification was approved in November 2020, and we can expect its adoption to increase gradually as market players integrate it into their products and services.
It is important to remember that the improvements made by HTTP/2 and HTTP/3 are not just about performance, but also about security. This is because, these protocols are often combined with SSL/TLS to secure exchanges between the client and the server (known as HTTPS). In particular, using HTTPS helps to prevent attacks through espionage, falsification or identity theft.
Although the move to HTTP/2 and HTTP/3 has many advantages, it is not without risks:
With the advent of HTTP/2 and HTTP/3, the HTTP protocol continues to adapt to the changing needs of the web. Although it is still too early to determine the real impact of HTTP/3 on performance and user experience, it is clear that these innovations offer new opportunities to improve the speed, reliability and security of websites and online applications.
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