对于大量的排序时应该对排序的效率高一点,但如果是对安全性要求比较高的话,那么就应该提高可靠性,如果是对数据可用性的要求高就应该减少冗余数据。-For a lot of sort of the sort of efficiency should be higher, but if the security requirements is relatively high, then it should improve reliability, if the data availability requirements of another job should be reduced redundant data.