java 并发模拟，简单重试 乐观锁控制 单元测试

@Test
public void testGoods() throws InterruptedException {
    CountDownLatch main = new CountDownLatch(3);
    CountDownLatch countDownLatch = new CountDownLatch(3);
    // 回退库存
    for (int i = 0; i < 3 ; i++) {
        countDownLatch.countDown();
        new Thread(new Runnable() {
            @SneakyThrows
            @Override
            public void run() {
                countDownLatch.await();
                // 简单重试
                for (int j = 0; j < 3; j++) {
                    try {
                        testReduce();
                        break;
                    } catch (Exception e) {
                        System.out.println("重试"+(j+1)+"减库存");
                        if(j==2){
                            System.out.println("重试"+(j+1)+"减库存失败");
                        }

                    }
                }

                main.countDown();

            }
        }).start();

    }
    main.await();

}