# The Evolution of HTTP, Clearly Explained

DevFeed: [The Evolution of HTTP, Clearly Explained](<https://devfeed.tech/articles/the-evolution-of-http-clearly-explained-18040.md>)

Original publisher: [Read original article](<https://blog.levelupcoding.com/p/the-evolution-of-http-clearly-explained>)

Author: Nikki Siapno

Published: 2026-09-04T16:39:02Z

Content type: article

Language: en

Sources: [Level Up Coding System Design Newsletter](<https://devfeed.tech/sources/level-up-coding-system-design-newsletter.md>)

Topics: [HTTP](<https://devfeed.tech/topics/http.md>), [client](<https://devfeed.tech/topics/client.md>), [servers](<https://devfeed.tech/topics/servers.md>), [Caching](<https://devfeed.tech/topics/caching.md>), [Web](<https://devfeed.tech/topics/web.md>)

Tags: [browser](<https://devfeed.tech/tags/browser.md>), [caching](<https://devfeed.tech/tags/caching.md>), [encoding](<https://devfeed.tech/tags/encoding.md>), [evolution](<https://devfeed.tech/tags/evolution.md>), [http](<https://devfeed.tech/tags/http.md>), [http-3](<https://devfeed.tech/tags/http-3.md>), [protocol](<https://devfeed.tech/tags/protocol.md>), [request](<https://devfeed.tech/tags/request.md>), [responses](<https://devfeed.tech/tags/responses.md>), [server](<https://devfeed.tech/tags/server.md>), [tcp](<https://devfeed.tech/tags/tcp.md>)

## AI overview

An explanatory article traces HTTP from versions 0.9 through 1.1, describing how headers, status codes, persistent connections, caching, and chunked transfer encoding addressed the web's growing scale and performance needs. It introduces HTTP/3 as part of that broader evolution.

## Source excerpt

From 0.9 to 3.0: What changed and why?