[tyingq]

My guess is that they are pulling that from Socket.IO's use of the same "real time" term. Which I suppose is to denote that it's not ajax polling (though I understand that Socket.IO does poll in some situations...)

[ekryski]

Feathers also supports Primus (https://github.com/primus/primus) so you can a bunch of other socket transports.

[aioprisan]

It uses pubsub for all modern browsers that support it, with fallback to polling connections for much older browsers.