Web service based distributed file service system, which is based on web, xml, and soap and built on hierarchical cache management, distributed mass-storage data management, access control, has a good extensibility, flexibility, reliability and security on the management system of enterprise's mass file date 基于webservice构架的分布式文件服务系统基于web、xml和soap技术、以及层次式缓存管理、分布式海量数据管理、访问控制等等多项技术,系统实现了企业级海量文件数据管理系统对可扩展、柔性、全分布、可靠、安全等几方面需求的支持。
In the 4th chapter, we discuss the problems in the implement of the web service based distributed file service system . it focuses on four problems : the design of central control unit, the policy of mass storage in local file service unit, the parallel access control algorithm and hierarchical cache management mechanism 论文的第四部分介绍了基于webservice的分布式文件服务系统在应用实现中需要考虑的许多方面的问题,构造出针对四个方面问题的算法模型:集中控制单元设计模型、海量文件的本地存储策略、文件并发访问控制算法和分层的缓存管理机制。