Deep Dive into HTTP/3: The Future of the Web
Introduction HTTP/3 is the latest evolution of the HTTP protocol, designed to overcome limitations in HTTP/2, particularly TCP-level Head-of-Line (HOL) blocking. By leveraging QUIC (Quick UDP Internet Connections), HTTP/3 enhances web performance, security, and reliability. In this blog, we will explore the architecture, benefits, and challenges of HTTP/3 in depth. Why HTTP/3? Understanding HTTP/2’s Limitations 1. TCP-Level HOL Blocking in HTTP/2 HTTP/2 uses a single TCP connection for multiplexing multiple streams. While this prevents application-layer HOL blocking, it still suffers from transport-layer HOL blocking due to TCP's sequential data transmission.

Introduction
HTTP/3 is the latest evolution of the HTTP protocol, designed to overcome limitations in HTTP/2, particularly TCP-level Head-of-Line (HOL) blocking. By leveraging QUIC (Quick UDP Internet Connections), HTTP/3 enhances web performance, security, and reliability. In this blog, we will explore the architecture, benefits, and challenges of HTTP/3 in depth.
Why HTTP/3? Understanding HTTP/2’s Limitations
1. TCP-Level HOL Blocking in HTTP/2
HTTP/2 uses a single TCP connection for multiplexing multiple streams. While this prevents application-layer HOL blocking, it still suffers from transport-layer HOL blocking due to TCP's sequential data transmission.