[rakoo]

I don't know if you've ever looked at it, but CouchDB has had an EventSource endpoint for a long time now (http://docs.couchdb.org/en/2.1.0/api/database/changes.html?h...). CouchDB is extremely easy to install, use and maintain, and there's a number of public providers out there if you don't want to host everything yourself.

As a more generic solution, there's also pushpin (http://pushpin.org/), which is the backend of fanout (https://fanout.io/), so that may also be a nice addition to your stack if you want a more direct redis->clients link