程式的主流程是 執行緒池Afetch資料，然後執行緒池 B delete資料

	public void init() {
		final String fetchPoolName = "fetch-pool";
		fetchVsearchDataExecutor = new ThreadPoolExecutor(4, threadNum, 10, TimeUnit.SECONDS,
				new ArrayBlockingQueue<Runnable>(20), new NameThreadFactory(fetchPoolName),
				new ThreadPoolExecutor.DiscardPolicy());

		final String deletePoolName = "delete-pool";
		deleteVsearchDataExecutor = new ThreadPoolExecutor(4, threadNum, 10, TimeUnit.SECONDS,
				new ArrayBlockingQueue<Runnable>(20), new NameThreadFactory(deletePoolName),
				new BlockRejectedExecutionHandler<Runnable>(deletePoolName));
	}