The server sent events mode might not fully work on multi instance clusters

[leonardoventurini]

Right now the init call (http) needs to occur on the same server as the event source connection is established at for some event event functionality to work.

Authentication actually works fine since we send the token in the HTTP request for the EventSoource:

https://github.com/leonardoventurini/helene/blob/3db53f62eb6c882f1da5c29c7e19bb4eda180a1e/packages/server/src/transports/http-transport.ts#L149

The problem is when we call sendEvent to the connection instance coming from a method call:

https://github.com/leonardoventurini/helene/blob/e47b02a9e9d73ee9ebeb4a60aae905d5a2587ec0/packages/server/src/client-node.ts#L153

We need to leverage Redis pub/sub for this.

For now using the normal event functionality should work fine.