Through analyzing the deficiencies of DDNS( Distributed Domain Name System), such as that can not provide for name resolution for resource, query inefficiently and combine with DNS not closely, presents a new name resolution mechanism EDiNS( Enhanced Distributed Name System). The EDiNS adopts Chord as its routing algorithm;it extracts the meta data of domain name and resources to register and query, so it can provide name resolution for resources and combines with DNS more closely. EDiNS apply a new kind of cache mechanism based on frequencies, which improve the query efficiency of DDNS. In this paper, the improved results are verified and analyzed. The simulation results show that query delay of EDiNS is optimized.%针对DDNS不能提供面向资源解析服务,并且查询效率低下,和现有名字解析系统DNS结合不够紧密的缺陷,设计了一种新型的名字解析机制EDiNS(Enhanced Distributed Name System).其在底层采用Chord算法进行路由,对域名和资源采取提取元信息(meta data)的方式进行注册和查询,实现面向资源的名字解析,并且能够和现有DNS更紧密的结合;采用了热度缓存机制,进一步提高查询效率.对改进后的结果进行了验证和分析,从仿真的结果可以看出,EDiNS在查询时延方面得到了优化.
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