Mercure: Real-Time for PHP Made Easy

Mercure: Real-Time for PHP Made Easy

Mercure is a protocol allowing to push data updates to web browsers and other HTTP clients in a convenient, fast, reliable and battery-efficient way. It is especially useful to publish real-time updates of resources served through web APIs, to reactive web and mobile apps. It is provided with an open source implementation written in Go.

It provides:

* native browser support, no lib nor SDK required (built on top of HTTP and server-sent events)
* compatible with all existing servers, even those who don't support persistent connections (PHP, serverless architecture, , FastCGI...)
* built-in connection re-establishment and state reconciliation
* JWT-based authorization mechanism (securely dispatch an update to some selected subscribers)
* performant, leverages HTTP/2 multiplexing
* designed with hypermedia in mind, also supports GraphQL
* auto-discoverable through web linking
* message encryption support
* can work with old browsers (IE7+) using an EventSource polyfill
* connection-less push in controlled environments (e.g. browsers on mobile handsets tied to specific carriers)

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Kévin Dunglas

October 24, 2019
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