The current network document sharing systems have brought vast amounts of literature together and bear huge traffic every day.With the amount of data and traffic increasing, the load of network document sharing system grows heavier. Users often need to wait a long time to login, query, download reference documents they need, which are usually stored disorderly in users' local storage devices and difficult for follow-up utiliaztion. In order to solve these problems, presents a hybrid Peer-to-Peer (P2P) networks-based sharing model of distributed literature library. The model is able to efficiently use of P2P network technology to allocate the enormous load of servers of network document sharing platform to the idle network edge nodes, and organize documents on user terminal nodes in order to provide the local literature database which is easy to access locally and remotely, so as to effectively enhance the network document sharing system performance and reduce network document sharing system maintenance costs. Describes the architecture, modules and processe of the hybrid Peer-to-Peer (P2P) networks-based sharing model of distributed literaturo library, and proposes a new chord-based multi-ring mechanisms, which is appropriate for effective the resources positioning and sharing in or among peer groups tested by experiments in our lab.%目前网络文献共享系统已经汇聚了海量的文献资源,而且具有巨大的访问量.随着数据量和访问量的攀升,网络文献共享系统的负荷日益沉重.用户常常需要等待较长的时问才能登录、查询、下载到自己所需参考的文献资料,而且下载到本地的文献常常混乱存储在本地,难以后续利用.为了解决上述问题,文中提出一种基于混合P2P网络的分布式文献库共享模型.该模型有效的利用P2P网络技术将网络文献共享平台服务器的巨大负载分担到常常处于资源闲置状态的网络边缘节点上,同时将用户终端节点上文献进行有机的组织,构成易于本地和异地检索的局部文献库,从而有效提升网络文献共享系统的性能,降低网络文献共享系统的维护成本.描述了基于混合P2P网络的分布式文献库共享模型体系架构、模块组成和工作流程,并重点阐述了一种新的基于chord的分领域多环机制.经实验验证,该机制有效的实现了组内和组间的节点间的文献资源定位和共享.
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