The requirements for batch go beyond the simple task of quickly processing data. A tremendous amount of infrastructure has been built around existing batch systems, including
目前，对批处理的需求超过了对迅速处理数据的简单任务的需求。
This requirement may be a carryover from file-oriented batch processing, where it was simple enough to ensure that information came into the process in a predefined sequence.
这个要求可能是由于面向文件的批处理造成的，在此类处理中，确保信息按照预定义的序列进入进程中非常简单。
Instead of having a multithreaded job-processing application that runs forever and, thus, can never leak memory, you have a simple batch script that cron starts.
不需要编写一直运行的多线程的作业处理应用程序(因此不会有内存泄漏)，而是由cron启动一个简单的批处理脚本。
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