Fault tolerance can be provided by redundancy — redundant disks, computers, and even data centers — but it is transactions that make it practical to build fault-tolerant software applications.
可以通过冗余(冗余的磁盘、计算机以及数据中心)来提供容错，但是事务使得构建容错的软件应用程序成为可能。
As to software, the method of modular design, the use of software redundancy and fault-tolerant technology enhance the readability of program.
在软件部分，采用模块化设计，使用软件冗余技术和容错技术增强软件的可读性。
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