java框架如何通过提供监控和日志记录功能，帮助运维团队保障应用健康稳定运行？

// 依赖项引入
import io.prometheus.client.Counter;
import io.prometheus.client.Histogram;
import io.prometheus.client.Summary;

// 定义度量标准
public class MyMonitor {
    public static Counter ordersProcessed = Counter.build()
            .name("orders_processed").help("Total number of orders processed").register();

    public static Histogram orderProcessingTime = Histogram.build()
            .name("order_processing_time").help("Time taken to process orders (ms)").register();

    public static Summary orderSizeSummary = Summary.build()
            .name("order_size_summary").help("Size of orders (items)").register();
}

// 使用度量标准
public class OrderService {
    public void processOrder(List<Item> items) {
        MyMonitor.ordersProcessed.inc();

        long startTime = System.currentTimeMillis();
        // 处理订单...
        long endTime = System.currentTimeMillis();
        MyMonitor.orderProcessingTime.observe(endTime - startTime);

        MyMonitor.orderSizeSummary.observe(items.size());
    }
}

// logback.xml
<configuration>
    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>

    <root level="INFO">
        <appender-ref ref="STDOUT" />
    </root>
</configuration>

// 使用日志记录
public class Main {
    private static final Logger logger = LoggerFactory.getLogger(Main.class);

    public static void main(String[] args) {
        logger.info("应用程序已启动...");

        // 应用程序逻辑...

        logger.warn("检测到异常：{}", ex);
    }
}