Executors VS ThreadPoolExecutor

//Executors.newFixedThreadPool();//请求堆积在处理队列可能会消耗非常大的内存OOM
//Executors.newCachedThreadPool(); newScheduledThreadPool(); //默认创建线程个数为Integer.MAX_VALUE 数量非常大，可能OOM
//ExecutorService service = Executors.newFixedThreadPool(3);

ExecutorService service = new ThreadPoolExecutor(3,3,1,TimeUnit.SECONDS,new ArrayBlockingQueue<Runnable>(2));