@Scheduled(fixedRate = 60000)
    @Transactional
    public void check() {
      .....
}

            
final Socket socket = IO.socket("http://localhost:3000");
            socket.connect();
            socket.emit("fromClient", "hello world");

            socket.on("fromServer", new Emitter.Listener() {
                @Override
                public void call(Object... args) {
                    System.out.println("response = "+(JSONObject)args[0]);
                }
            });

IO.Options opts = new IO.Options();
opts.transports=new String[]{"polling"};
final Socket socket = IO.socket("http://ip:port");

final Socket socket = IO.socket("http://localhost:3000");