@mgwidmann did you ever find more companies using presence in production? I’m considering using it for a production application as well and looking for more examples of people using it in the wild.

I did some quick benchmarks in digital ocean and found a with a cluster of 3 elixir elixir nodes I could handle 150k concurrent sessions with ~2.2GB of RAM used on each node and my elixir nodes were using ~50% CPU. I had each session in its own room (my production use case is very few users subscribed to the same topic). I could also check for whether a given user was online or not in ~17µs (this didn’t seem to change as I ramped up the number of connections).

For my use-case I think 150k users is plenty for the foreseeable future, but wanted to see if anyone had pushed it beyond that.

We use it but we only have a few thousand employees at most.

I’m using it in a production app and have not run into problems scaling to so far, 10000s of concurrent connections