WebSocket + AKKA + Redis pub/sub

[Jason]

I wonder know if anyone have tried to use websocket to send message to Redis pub/sub?

[Viktor Klang]

Hi Jason,

Apparently no one wants to admit to have done that :-)

Cheers,
√

On Tue, Aug 21, 2012 at 12:36 PM, Jason <arvi...@gmail.com> wrote:
> I wonder know if anyone have tried to use websocket to send message to Redis
> pub/sub?
>
>

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[Jeremy Pierre]

Apologies, I should have jumped in earlier - my team and I are using
websockets via Netty in Akka 2.0.x with RabbitMQ. Looks like Redis
pub/sub is a bit simpler but maybe I can help.

Can't give a lot of details about what specifically we're working on
but if you have general questions about setup/approach I'll do my
best.

Jeremy

[gitted]

This seems like a fairly common pattern/problem domain that people will be facing when they want to incorporate real-time updates on websites.

Is there anything open source that can help guide me on how to implement this?  I was thinking of using redis also but rabbitmq would be very similiar just the backing queue is different.

[Ryan Tanner]

I've never used it in production but waaaay back I built a proof-of-concept based on one of the Play Framework sample apps using Redis pub/sub to feed a WebSocket based chat room.

https://github.com/ryantanner/websocketchat-redis

It does extremely little, really just round-trips messages across Redis pub/sub rather than having messages be sent directly out to other subscribers.

[Ngoc Dao]

The original question about WebSocket + Akka + Redis was 2 years ago.

Now, you don't need Redis any more, because:
* Akka is already very good at messaging.
* Recent versions of Akka have clustering feature: http://doc.akka.io/docs/akka/2.3.5/scala/cluster-usage.html

In short, you only need WebSocket + Akka.
To easily work with multiple messaging channels (like multiple chat rooms) in a cluster, you can also use this library:
https://github.com/xitrum-framework/glokka

Simple chat example that can run in a cluster:
http://107.167.187.67/websocketChatDemo