A/sup 3/容错框架,用于大规模网络上具有多个移动代理的分布式计算

Allan K. Y. Wong, Wilfred W. K. Lin
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引用次数: 1

摘要

我们提出了A/sup 3/容错框架,用于大规模网络上具有多个移动代理的分布式计算。A/sup 3/容错包括三个目标,即访问安全性、代理持久性和避免长排队时间。最后两个目标是通过代理移动性实现的。该框架的原型在Internet上进行了验证,Internet是一个典型的大型网络,其中选定的站点包括我们大学的部分内部网和其他本地Internet站点,以及稳定的基于java的Aglets移动代理平台。该原型的验证结果一致表明,A/sup 3/框架确实是一个容错的解决方案,适用于大规模网络上具有多个移动代理的分布式计算。访问安全是通过形成公社,即村庄和公共内部网来实现的。这些社区通过拒绝非成员访问共享的社区资源来保护自己。最小的公社是一个村庄,不同的村庄通过中介或连接器自动连接成一个更大的公社,称为公共内部网,它与传统的为机构隐私和完整性而形成的公社有不同的内涵。实现代理持久性和避免长排队时间的代理移动性取决于迁移索引的瞬时值,这些值是从特定的运行时参数集计算出来的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The A/sup 3/ fault-tolerant framework for distributed computing with multiple mobile agents over sizeable networks
We are proposing the A/sup 3/ fault-tolerant framework for distributed computing with multiple mobile agents over sizeable networks. A/sup 3/ fault tolerance includes three objectives, namely, access security, agent persistence, and avoidance of long queuing time. The last two objectives are achieved by agent mobility. The prototype for this framework was verified over the Internet, a typical sizeable network, with selected sites that include part of our university's intranet and other local Internet sites, as well as the stable Java-based Aglets mobile-agent platform. Results from the verification exercise with this prototype indicate unanimously that the A/sup 3/ framework is indeed a fault-tolerant solution for distributed computing with multiple mobile agents over sizeable networks. Access security is achieved by formation of communes, namely, villages and public intranets. These communes protect themselves by denying accesses by non-members to the shared communal resources. The smallest commune is a village, and different villages are interconnected automatically by mediators or connectors into a larger commune known as the public intranet, which has a different connotation from the conventional one that is formed for institutional privacy and integrity. Agent mobility for achieving agent persistence and avoidance of long queuing time depends on the instantaneous values of the migration indices, which are computed from the specific sets of run-time parameters.
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