네트워크 품질 최적화를 통해 Java 웹사이트의 응답 속도를 높이는 방법은 무엇입니까?

HttpConfiguration config = new HttpConfiguration();
config.addCustomizer(new SecureRequestCustomizer());

SslContextFactory sslContextFactory = new SslContextFactory();
sslContextFactory.setKeyStorePath("/path/to/keystore");
sslContextFactory.setKeyStorePassword("password");

Server server = new Server();
ServerConnector connector = new ServerConnector(server,
        new SslConnectionFactory(sslContextFactory, "http/1.1"),
        new HttpConnectionFactory(config));

connector.setPort(443);
server.setConnectors(new Connector[]{connector});

HttpConnectionFactory http2 = new HTTP2CServerConnectionFactory(config);
HTTP2CServerConnectionFactory.configure(http2, new HTTP2ServerConnectionFactory(config));

connector.addConnectionFactory(http2);

server.start();

Undertow server = Undertow.builder()
        .addHttpListener(443, "localhost")
        .setHandler(
                Handlers.path().addPrefixPath("/",
                        new HttpHandler() {
                            public void handleRequest(final HttpServerExchange exchange) throws Exception {
                                exchange.getResponseHeaders().put(Headers.CONTENT_TYPE, "text/plain");
                                exchange.getResponseSender().send("Hello World");
                            }
                        }))
        .build();
server.start();

URL url = new URL("https://www.example.com");
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestProperty("Connection", "Keep-Alive");
connection.connect();

public class GzipFilter implements Filter {
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws IOException, ServletException {
        HttpServletRequest httpRequest = (HttpServletRequest) request;
        HttpServletResponse httpResponse = (HttpServletResponse) response;

        String acceptEncoding = httpRequest.getHeader("accept-encoding");
        if (acceptEncoding != null && acceptEncoding.contains("gzip")) {
            GzipServletResponseWrapper gzipResponse = new GzipServletResponseWrapper(httpResponse);

            chain.doFilter(request, gzipResponse);

            gzipResponse.close();
        } else {
            chain.doFilter(request, response);
        }
    }
}

public class ExpiresFilter implements Filter {
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws IOException, ServletException {
        HttpServletResponse httpResponse = (HttpServletResponse) response;

        Calendar calendar = Calendar.getInstance();
        calendar.add(Calendar.DAY_OF_YEAR, 7);
        Date expires = calendar.getTime();

        httpResponse.setHeader("Expires", expires.toString());

        chain.doFilter(request, response);
    }
}