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A small group of friends and I are working on a virtual karaoke club using WebRTC and Go, https://github.com/ryanrolds/club. 100% agree with the WebRTC being easy to create proof-of-concepts, but there are a lot of edge cases and browsers differences that have to be worked through.

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What are your plans to deal with the scalability issue thus far? I think that is always the biggest challenge.

The current plan is to keep everyone in "groups", think friends at a table, small (max 6). The server will maintain peer connections with everyone in the "room" and broadcast the singer via that peering. As the singer changes, the server will simply allow the KJ to pick who is getting broadcast over the other server -> client peer.

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