Abstract
In the design and development of software systems, redundancy mechanism is a technique that improves the reliability of a system. Therefore, the mechanism of redundant processing of core modules in a module-based software system was proposed in this study on the basis of the analysis of the structural redundancy of a software system and its impact on reliability. This mechanism includes a dual-module redundancy structure of a single module and a dual-module redundant structure of combined modules; fault detection and judgment method was also presented. Simultaneously, the reliability of the system is analyzed on the basis of various redundant structures.
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