To enhance user perceived performance,Akamai' s content distribution network(CDN) utilizes the domain name system(DNS) effectively to redirect users to close-by content replicas over short time scale.The use of DN...To enhance user perceived performance,Akamai' s content distribution network(CDN) utilizes the domain name system(DNS) effectively to redirect users to close-by content replicas over short time scale.The use of DNS redirection has brought a significant advantage to Akamai' s CDN.However,the reliance on DNS also poses a fundamental threat to Akamai' s content distribution model.In particular,systematic evaluation and quantification illustrates the impact of recent emerging public DNS resolving services on Akamai' s CDN,including the degradation of corresponding user perceived performance and the benefit damnification of collaborating internet services providers(ISPs) that host Akamai's edge servers.The measurement demonstrates that a considerable penetration of public DNS resolving services(e.g.,OpenDNS and GoogleDNS) effectively corrupts the Akamai' s serving model,namely the large-scale server distribution and quick DNS redirection.展开更多
众所周知，DNS是域名系统（Domain Name System）的缩写，该系统用于命名组织到域层次结构中的计算机和网络服务。DNS命名用于Internet等TCP/IP网络中．通过用户友好的名称查找计算机和服务。当用户在应用程序中输入DNS名称时。DNS服务...众所周知，DNS是域名系统（Domain Name System）的缩写，该系统用于命名组织到域层次结构中的计算机和网络服务。DNS命名用于Internet等TCP/IP网络中．通过用户友好的名称查找计算机和服务。当用户在应用程序中输入DNS名称时。DNS服务可以将此名称解析为与之相关的其它信息，如lP地址。在Windows网络之中．有一些常用的工具来测试DNS解析．其中我们最常用的就是NSLOOKUP命令，该命令可以用于正向和反向的DNS解析。以下微软知识库文章中讲到了DSLOOKUP命令的一个用途，而且和我下面讲述的问题有一些联系：How to obtain Internet Mail Exchanger records with the Nslookup.exe Utility http：//support.microsoft.展开更多
基金Supported by the National Basic Research Program of China(No.2013CB329103)the National Natural Science Foundation of China(No.61133016,61300191)+1 种基金the National High Technology Joint Research Program of China(No.2011AA010706)the Program of SichuanProvince Applied and Basic Research(No.2013JY0116)
文摘To enhance user perceived performance,Akamai' s content distribution network(CDN) utilizes the domain name system(DNS) effectively to redirect users to close-by content replicas over short time scale.The use of DNS redirection has brought a significant advantage to Akamai' s CDN.However,the reliance on DNS also poses a fundamental threat to Akamai' s content distribution model.In particular,systematic evaluation and quantification illustrates the impact of recent emerging public DNS resolving services on Akamai' s CDN,including the degradation of corresponding user perceived performance and the benefit damnification of collaborating internet services providers(ISPs) that host Akamai's edge servers.The measurement demonstrates that a considerable penetration of public DNS resolving services(e.g.,OpenDNS and GoogleDNS) effectively corrupts the Akamai' s serving model,namely the large-scale server distribution and quick DNS redirection.
文摘众所周知，DNS是域名系统（Domain Name System）的缩写，该系统用于命名组织到域层次结构中的计算机和网络服务。DNS命名用于Internet等TCP/IP网络中．通过用户友好的名称查找计算机和服务。当用户在应用程序中输入DNS名称时。DNS服务可以将此名称解析为与之相关的其它信息，如lP地址。在Windows网络之中．有一些常用的工具来测试DNS解析．其中我们最常用的就是NSLOOKUP命令，该命令可以用于正向和反向的DNS解析。以下微软知识库文章中讲到了DSLOOKUP命令的一个用途，而且和我下面讲述的问题有一些联系：How to obtain Internet Mail Exchanger records with the Nslookup.exe Utility http：//support.microsoft.
