阿里巴巴开发手册为什么禁止使用 Executors 创建线程池？

Executors.newFixedThreadPool(nThreads)

public static ExecutorService newFixedThreadPool(int nThreads) {
    return new ThreadPoolExecutor(nThreads, nThreads,
                                  0L, TimeUnit.MILLISECONDS,
                                  new LinkedBlockingQueue<Runnable>());
}

存在无界队列导致OOM的风险

Executors.newCachedThreadPool()

public static ExecutorService newCachedThreadPool() {
    return new ThreadPoolExecutor(0, Integer.MAX_VALUE,
                                  60L, TimeUnit.SECONDS,
                                  new SynchronousQueue<Runnable>());
}

存在线程无限创建导致OOM的风险

Executors.newScheduledThreadPool(corePoolSize)

public ScheduledThreadPoolExecutor(int corePoolSize) {
    super(corePoolSize, Integer.MAX_VALUE, 0, NANOSECONDS,
          new DelayedWorkQueue());
}

同时存在线程无限创建+无界队列导致OOM的风险