Eight years ago, Mercure was born: an open-source protocol and Go server designed to bring the power of real-time to any web architecture, especially ecosystems like PHP that don't natively support persistent connections.

Symfony quickly adopted Mercure as its official solution for real-time features. Today, Mercure has become an essential standard, powering hundreds of production projects, from startups to enterprise accounts. Fully integrated into Symfony (via Symfony UX) as well as API Platform, and bundled by default in FrankenPHP, Mercure radically simplifies the developer experience. Whether you are building collaborative editors (Google Docs style), syncing instant dashboards, notifying your users when a background task finishes, or, more recently, streaming LLM tokens and tracking AI agent progress, Mercure stands out as the ideal solution.

Today, we are releasing Mercure 1.0 along with a brand-new Symfony integration! This protocol overhaul leverages the latest web standards, "URL Pattern" and "OAuth Rich Authorization Requests," to make developing AI and real-time features even simpler, more powerful, and more secure. This new version also brings optional compatibility with OAuth and OIDC servers.

Join me during this talk to discover all the new features in this latest release of Symfony Mercure, and make your apps more interactive than ever!