Analysis of DNS Cache Effects on Query Distribution

Analysis of DNS Cache Effects on Query Distribution
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DNS缓存对查询分布的影响分析

DOI:
10.1155/2013/938418
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发表时间:
2013-12
期刊:
The Scientific World Journal
影响因子:
--
通讯作者:
王正
王正
中科院分区:
其他
文献类型:
--
作者:
王正

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本文研究了DNS缓存对CN顶级域服务器查询分布的影响。我们首先过滤出畸形的DNS查询,净化日志数据污染,根据六个类别。提出了一种DNS解析模型,更具体地说是DNS缓存模型。通过分析模型和仿真实验,验证了DNS缓存效应和该高速缓存共享效应对请求分布的影响。基于该高速缓存模型,给出了CN缓存日志数据结果并进行了分析。定量地推导了域名的近似TTL分布。
This paper studies the DNS cache effects that occur on query distribution at the CN top-level domain (TLD) server. We first filter out the malformed DNS queries to purify the log data pollution according to six categories. A model for DNS resolution, more specifically DNS caching, is presented. We demonstrate the presence and magnitude of DNS cache effects and the cache sharing effects on the request distribution through analytic model and simulation. CN TLD log data results are provided and analyzed based on the cache model. The approximate TTL distribution for domain name is inferred quantificationally.
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