# Rails 7 E109 Live vistor count. ActionCable, Turbo Broadcasts, Kredis

- URL: https://superails.com/posts/rails-7-e109-live-vistor-count-actioncable-turbo-broadcasts-kredis
- Published: 2023-02-07
- Duration: 22:01
- Access: free
- Topics: redis, live update, server side rendering, kredis, websockets, turbo, hotwire

Let's add "Live count for total website visitors" and "Live count for visitors inside a room".

Importantly, we will not deal with user REGISTRATION to identify a visitor. One browser session = one unique visitor with a session_id.

We will use "turbo_stream_from" to plug into an ActionCable Channel and track websocket subscriptions and un-subscriptions.
Whenever a user "subscribes", we will add his browser session_id to a Kredis array.
We will Broadcast the updated Kredis array COUNT to everybody subscribed to the channel.

Sounds quite complex, but I still think of it as a very low-code solution.

Text walkthrough: https://blog.corsego.com/action-cable-broadcast-users-online
Episode source code with comments: https://github.com/corsego/109-live-visitor-count-action-cable-kredis-turbo/commit/645c08eb981edaaad919f070e300a2ad24d28b08

0:00 Demo - Track visitors on a website and in a room
1:51 Track all website visitors with Kredis and ActionCable
12:25 Update live vistiors count with Turbo Stream Broadcasts
14:29 Track visitors in a Room
20:40 Summary and final demo

## Chapters

- 0:00 Demo - Track visitors on a website and in a room
- 1:51 Track all website visitors with Kredis and ActionCable
- 12:25 Update live vistiors count with Turbo Stream Broadcasts
- 14:29 Track visitors in a Room
- 20:40 Summary and final demo