Guava

RateLimiter

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
RateLimiter rateLimiter = RateLimiter.create(10);
for (int i = 0; i < 20; i++) {
    int finalI = i;
    new Thread(new Runnable() {
        @Override
        public void run() {
            int cnt = 0;
            while (true) {
                if (rateLimiter.tryAcquire()) {
                    cnt++;
                    System.out.println("thread: " + finalI + " cnt: " + cnt);
                }
            }
        }
    }).start();
}
Thread.sleep(1000 * 100 * 1000);

源码流程图：