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Mercure: Real-time Made Easy

Mercure is an open solution for real-time communications designed to be fast, reliable, and battery-efficient. It is a modern and convenient replacement for both WebSockets and the higher-level libraries and services relying on it.

Mercure is especially useful to add streaming and asynchronous capabilities to REST and GraphQL APIs. Because it is a thin layer on top of HTTP and SSE, Mercure is natively supported by modern web browsers, mobile applications and IoT devices.

A free (as in beer, and as in speech) reference server as well as a hosted service are available.

Mercure: at a glance

Pure HTTP, full-duplex, leverage HTTP/2+
High performance, low latency
Native browser support, works everywhere
Publish with a simple POST request
Subscribe using Server-Sent-Events
Automatic reconnection, refetch missed messages
Designed for REST and GraphQL
Private updates (JWT authorization)
Presence API and subscription events
Event store
Compatible with serverless, PHP and the like
Supports end-to-end encryption

They use Mercure

INTM
M6
Oskab
Les-Tilleuls.coop
Sensiolabs
Alice Garden
BCE
MYM
Wrestling
Printify
Climate Change Conference
Euro 2020
Lush
Rectangle Health
Yap Life
Raven Control
Mail Tm

Need help ?

Documentation

Reading the documentation is an excellent way to discover Mercure.

Community support

Chat with the community on Slack and Stack Overflow

Training

Improve your Mercure skills thanks to our trainings.

Professional services

Les-Tilleuls.coop provides professional services: web development, trainings or consulting.