SphU.entry测试无效

maven版本

com.alibaba.cloud spring-cloud-starter-alibaba-sentinel 2.2.6.RELEASE 代码如下，简单demo测试限流无效

public class SentinelExample2 {

private static void initFlowRules() { List rules = new ArrayList<>(); FlowRule rule = new FlowRule(); rule.setResource("HelloWorld1"); rule.setGrade(RuleConstant.FLOW_GRADE_QPS); // Set limit QPS to 10. rule.setCount(10); rules.add(rule); FlowRuleManager.loadRules(rules); }

public static void main(String[] args) { // 配置规则. initFlowRules();

ExecutorService exec = Executors.newCachedThreadPool();
CountDownLatch countDownLatch = new CountDownLatch(1);
for (int i = 0; i < 500; i++) {
    Runnable run = () -> {
        try {
            countDownLatch.await();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

        Entry entry = null;
        // 务必保证finally会被执行
        try {
            // 资源名可使用任意有业务语义的字符串
            entry = SphU.entry("HelloWorld1");
            // 被保护的业务逻辑
            // do something...
            System.out.println("hello world");
        } catch (BlockException e1) {
            // 资源访问阻止，被限流或被降级
            // 进行相应的处理操作
            System.out.println("blocked!");
        } finally {
            if (entry != null) {
                entry.exit();
            }
        }

    };
    exec.execute(run);
}

try {
    Thread.sleep(3000);
} catch (InterruptedException e) {
    e.printStackTrace();
}

countDownLatch.countDown();

}

请问是哪里出问题了？麻烦解答，谢谢

原提问者GitHub用户wuhaoqiang1