Redis·Ö²¼Ê½Ëø RedissonRedLock

<dependency>
    <groupId>org.redisson</groupId>
    <artifactId>redisson</artifactId>
    <version>3.14.0</version>
</dependency>

public class RedissonRedLock {
    private volatile static RedissonClient redisson=null;
    private volatile static RedissonRedLock singleton=null;
    public RedissonRedLock(){
        Config config = new Config();
        config.useSingleServer()
        .setAddress("redis://127.0.0.1:6379")
        .setDatabase(1)
        .setPassword("password")
        .setKeepAlive(true);
        redisson= Redisson.create(config);
    }
    public static RedissonRedLock getSingleton() {
        if (singleton == null) {
            synchronized (RedissonRedLock.class) {
                if (singleton == null) {
                    singleton = new RedissonRedLock();
                }
            }
        }
        return singleton;
    }
    private void test() throws InterruptedException {
        RLock lock = redisson.getLock("myLock");
        // or wait for lock aquisition up to 65 seconds
        // and automatically unlock it after 10 seconds
        boolean res = lock.tryLock(20, 10, TimeUnit.SECONDS);
        System.out.println("res "+res);
        if (res) {
            try {
              System.out.println("³É¹¦");
            } finally {
              lock.unlock();
            }
        }else {

        }
    }
    public static void main(String[] args) throws InterruptedException {
        for (int i = 0; i <2 ; i++) {
            getSingleton().test();
            //TimeUnit.SECONDS.sleep(5);
        }
    }
}