番石榴RateLimiter延迟后不应用节流

如何解决番石榴RateLimiter延迟后不应用节流

我一直在玩番石榴RateLimiter，发现它在延迟之后（如果rateLimiter在一段时间内未使用）不会立即应用节流。

下面是示例代码。

public static void main(String[] args) throws Exception{
        RateLimiter rateLimiter = RateLimiter.create(1);
        
        System.out.println("#1 Before delay waitTime= "+  rateLimiter.acquire());
        System.out.println("#2 Before delay waitTime= "+  rateLimiter.acquire());
        System.out.println("#3 Before delay waitTime= "+  rateLimiter.acquire());
        System.out.println("-----------------------------");
        Thread.sleep(4000);
        
        System.out.println("#1 After delay waitTime= "+  rateLimiter.acquire());
        System.out.println("#2 After delay waitTime= "+  rateLimiter.acquire());
        System.out.println("#3 After delay waitTime= "+  rateLimiter.acquire());
        
        System.out.println("-----------------------------");
        Thread.sleep(4000);
        
        System.out.println("#1 After delay waitTime= "+  rateLimiter.acquire());
        System.out.println("#2 After delay waitTime= "+  rateLimiter.acquire());
        System.out.println("#3 After delay waitTime= "+  rateLimiter.acquire());
        
    }

结果如下：

＃1延迟等待时间= 0.0

＃2延迟前等待时间= 0.993215

＃3延迟前等待时间= 0.998329

---

＃1延迟等待时间= 0.0

＃2延迟后waitTime = 0.0

＃3延迟后等待时间= 0.999903

---

＃1延迟等待时间= 0.0

＃2延迟后waitTime = 0.0

＃3延迟后等待时间= 0.999921

想知道为什么延迟后的前两次尝试（上面以粗体突出显示）没有节流（waitTime = 0.0）