摘要： 为了实现分布式协同设计中的共享信息快速检索以及多副本同步，提出了基于对等网结构的信息共享系统，给出了该信息共享系统的节点模型、管理策略及信息检索模型，提出了一种结合分布式哈希表和聚类的检索方法，保证了用户能够在协同设计系统中快速地精确检索和“盲目”检索，实现了系统的用户透明。为了保证分布式多副本同步，提出“对等锁”作为一致性维护方法。该文给出了系统的具体实现方法，并给出了实例。

关键词: 分布式协同设计, 对等, 信息共享系统, 检索, 分布式哈希表, 多副本同步

Abstract: Aiming at the information retrieval and the multi-replica synchronization in distributed and collaborative design systems, an information sharing system based on P2P (peer to peer) structure is presented. The node model, the management scheme and the information retrieval model are given. In order to ensure the exact retrieval and the blind retrieval, an information search method based on distributed hash table and information clustering is given. In order to ensure the distributed multi-replica synchronization, a novel P2P multi-replica synchronization algorithm “peer-to-peer lock” is proposed. The implement method and an instance system are given.

Key words: Distributed and collaborative design, Peer to peer (P2P), Information sharing system, Retrieval, Distributed hash table (DHT), Multi-replica synchronization