It sounds like Supabase is pulling out the WAL listening bits into its own library?

https://supabase.com/blog/supabase-realtime-multiplayer-gene...

If so, y'all might want to look into: https://github.com/elixir-ecto/postgrex/blob/master/lib/post...

The database listener in this version of Realtime uses Postgrex - it's great

Super! Y'all are doing amazing things.

Where can I see that in the code? Or is not quite out yet?

We started developing Realtime: Multiplayer version many months ago in a private repo just to experiment with Phoenix's Broadcast and Presence and over time we just added to it.

We plan to move all the code over to https://github.com/supabase/realtime in the next couple of weeks and you'll be able to see the code in its entirety.