MD5算法在双机热备份信息同步中的应用

在双机热备份算法中,主服务器与备份服务器之间保持信息及时同步至关重要,但传统的主备信息同步方式在效率和可靠性方面却存在着一定的缺陷。为更好地提高主备信息同步效率,本文提出采用MD5(M es-sage D igest 5)算法,对主服务器与备服务器的同步信息进行信息摘要运算,转化为定长字节的信息流后再进行同步。实践应用证明该方法可快速侦测出主、备服务器同步信息的差别,提高双机热备份信息同步的效率。

Application of MD5 Algorithm in Information Synchronization in a Hot Dual Redundancy System

Information synchronization between the prime and backup servers in a hot dual redundancy system is of critical importance,but the traditional way of synchronized information exchange has limitation in efficiency and reliability.To improve the efficiency of synchronized information exchange,this paper proposes a solution that digests the synchronized information between the prime and backup servers with MD5 algorithm.This algorithm converts synchronized information to fixed-length digested information before synchronization.This way efficiently detects tiny difference between the prime and backup servers and improves the efficiency in exchange of synchronized information between them.