分布式信号量计数器控制共享资源访问

1.获取信号量计数器RSemaphore semaphore redissonClient.getSemaphore(TASK_RUN_SEMAPHORE);2.初始化信号量变量semaphore.trySetPermits(3);3.获取可用信号量semaphore.availablePermits();4.尝试获取信号量boolean acquired semaphore.tryAcquire();5.释放信号量semaphore.release();