番石榴RateLimiter延迟后不应用节流

问题描述

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)

解决方法

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