Web Socket을 사용하여 구현WebSocketConfiguration.class@RequiredArgsConstructor@EnableWebSocket@Configurationpublic class WebSocketConfiguration implements WebSocketConfigurer { final WebSocketChatHandler webSocketChatHandler; @Override public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) { registry.addHandler(webSocketChatHandler, "/ws/chats"); }} WebSocketChatHan..