Phoenix pubsub -> AppWeb.Endpoint or Phoenix.PubSub?

[LostKobrakai]

You can learn more about the differences between the two on this and later posts:

Channel.broadcast vs Endpoint.broadcast vs PubSub.broadcast

You generally shouldn’t need to care about the implementation details within phoenix pubsub. It currently publishes messages between multiple nodes by broadcasting through the configured inter-node communication adapter (pg or redis based) and locally directly to listeners using elixir’s Registry. That’s why there’s a broadcast and dispatch. But that may change at any time. Publishing to sockets is not handeled by Phoenix PubSub, but only the channels layer on top. There’s really two layers …