public void UpdatePosition2(string user_id, double x, double y, string room_name)
{
string canonical_room_name = RoomNameGuard.CheckName(room_name);
UserCenter.UpdatePosition(canonical_room_name, user_id, x, y);
HotRoomCenter.Update(canonical_room_name, user_id);
}
public IEnumerable <UserCount> GetHotRoomList()
{
return(HotRoomCenter.GetHotRoomList());
}