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首先简要分析云计算平台的基本特征、技术优势及其在数字图书馆中的应用。之后,基于“面向全国的广播电视大学数字图书馆建设项目”的研究成果,结合云计算平台、SOA、VPN等技术,提出一种新型的分布式数字图书馆构架模型。本文详细介绍该架构模型的主要组成部分、层次结构、关键技术及其与现有数字图书馆系统的融合等内容,并将其应用到全国广播电视大学数字图书馆的建设中进行验证。该系统能够通过服务注册和开放API机制,动态整合地理位置分布的图书馆资源和服务,以满足不同层次和规模的用户需求。
First, a brief analysis of cloud computing platform, the basic characteristics, technical advantages and its application in digital library. After that, based on the research results of Digital Library for National Radio and Television University and the technologies of cloud computing platform, SOA and VPN, a new distributed digital library architecture model was proposed. This paper introduces the main components of the architecture model, the hierarchical structure, the key technologies and the integration with the existing digital library system in detail and applies it to the construction of the National Radio and TV University Digital Library for verification. The system dynamically integrates geographically distributed library resources and services through service registration and open API mechanisms to meet user needs at different levels and sizes.