Slides from Nicolas Perussel’s DrupalCon Vienna Session on HTTP/3 Now Publicly Available

Nicolas Perussel, Head of Architecture at Ekino, explained during the session that by optimizing protocols such as TLS 1.3, OCSP stapling, and session resumption, developers can reduce connection latency by roughly 350 milliseconds. He also demonstrated that enabling TCP Fast Open shortens reconnection time by cutting round-trips, while HTTP/3 with QUIC delivers faster performance on mobile networks and maintains stable connections even when switching between Wi-Fi and mobile data.

The presentation detailed how these improvements can be implemented through nginx configurations that activate features like 0-RTT, QUIC, and secure session handling. Perussel noted that many of these technologies are already supported by modern hosting providers and CDNs, making it possible to achieve immediate performance gains. His talk underscored that meaningful speed improvements often begin at the network layer rather than in application code.

The release of the slides provides developers and DevOps teams with an accessible reference for applying these optimizations and understanding the underlying mechanics of modern web transport protocols.