一种考虑服务质量的服务发现机制

QoS-considered services discovery

服务发现是服务框架中联系消费者和提供者的重要环节。提出了一种考虑服务质量的服务发现机制(QSCD)。QSCD根据消费者的消费历史,考虑了消费者对服务质量的要求,在消费者本地建立一个服务发现机构。并在QSCD引入服务预约和服务社区等概念,对该机制进行了扩展。它作为对已有服务发现机制的补充,可提高发现的速度。

The service discovery is the core technique of service framework, and the key part of service brokers that link service providers and service consumers in heterogeneous distributed systems. A QoS-Concerned services Discovery（QSCD） was proposed, which complemented the existing service discovery. QSCD is a consumer-oriented mechanism of service discovery, which builds at the side of service consumer and is ouly used by consumer himself. It stores information related to the services invoked by the consumer and considers consumer＇s requirement for QoS. Furthermore Services Information Description Document（SIDD）, corresponding schema and APIs were presented. In addition, service reservation and service dommunity was put forward to extend this mechanism. As a result, it can speed up the discovery of services.