基于带宽层次的服务发现系统

A Service Discovery System Based on Bandwidth Region

服务发现系统在广域分布式系统中起着资源共享和协调的重要作用。现有的服务发现系统能够从不同的角度来满足服务发现的需要，但是它们都是基于站点的服务访问模式。本文提出了一种基于带宽层次的服务发现系统。用户可尽可能发现和访问处于同一带宽层的服务，因此最大程度上避免了带宽竞争带来的延迟。引入代理服务器和解析器解决了用户和服务提供者定位服务和一致性的维护。介绍了系统模型，分析和讨论了系统设计中的关键问题，描述了核心组件的设计方法。

The service discovery system has a great impact on the efficiency of the resource sharing and collaborating in wide-area distributed systems. At present, existing service discovery system each has its strong point, but their access models are node-based. A service discovery system based on bandwidth region is introduced. Users can discovery and access needed service which locals in the same bandwidth region. This avoids access delay caused by bandwidth competition. Proxies and analyzer provide location service for users and service suppliers and maintain service consistency. The system model is introduced. Some issues are discussed and analyzed. The design of main system components are described in detail.