基于云平台的软件服务流的实现机制的研究  

Implementation mechanism of SaaS-flow based on cloud platform

作　　者：陈亮[1] 东韩[2] 徐凌宇[1] 蔡茂[1] 杜金峰[1] 

机构地区：[1]上海大学计算机工程与科学学院,上海200072 [2]国家海洋信息中心,天津300171

出　　处：《计算机工程与设计》2012年第11期4196-4199,共4页Computer Engineering and Design

基　　金：国家"十二五"规划基金项目(201105033-4;201105033-5);国家自然科学基金项目(40976108);上海市科技创新行动计划基金项目(11511500200)

摘　　要：简单的SaaS模型已经无法满足用户日益增长的功能需要,SaaS模型正由简单的软件复用向流的形式发展。为此结合工作流与SaaS的思想,提出了软件服务流的概念。在对用户的需求进行了研究的基础上,发现大规模访问,高并发以及单位时间的密集访问在软件服务流平台上是一种常态。因为平台要提供Web端的用户访问,因而平台要对Web端提供直接的访问接口,并提供监控支持。同时作为云平台,其在使用时支持用户的透明访问,并支持映射规约(MapReduce)程序及其分布式存储。结合实例,对平台进行了实验分析,表明了平台的可用性和高效性。Simple SaaS model can no longer meet users＇ growing capability needs, and the SaaS model is developed from the form of simple software reuse to that of the stream. The idea the concept of SaaS-flow is presented combined the idea of workflow and SaaS. With the research of users＇ demands, large-scale access, high concurrency, and intensive access in unit time on SaaS-flow platform are discovered. The platform provides the Web side with direct access interface and monitoring support due to the user access on that side. Meanwhile, as a cloud platform, it supports users＇ transparent access, MapReduce based programs, and their distributed storage. Cases are studied on the platform to conduct experimental analysis, and the availability and the efficiency of the platform are proved.

关 键 词：云计算 软件服务流 HADOOP分布式文件系统 映射规约 数据处理 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]