Actually, I'm not sure that this is a good idea, as it could indicate that calling io.to(specificSocketId).emit() is recommended.

@MartinKolarik thoughts?

@darrachequesne I think it makes sense if it's documented in regards to socketInstance.emit() as that method is public and not discouraged, as I understand (unlike using the ID directly). Maybe with a note that it's useful in some scenarios where you have lots of 1:1 communication and understand what you're doing. In our specific case, this simple change resulted in 70% - 80% overall redis load reduction.

Thanks 👍