Anycast In context: a tale of two systems

Anycast In context: a tale of two systems
复制标题

任播上下文:两个系统的故事

DOI:
10.1145/3452296.3472891
复制
发表时间:
2021
期刊:
ACM SIGCOMM
影响因子:
--
通讯作者:
Li, Ke
Li, Ke
中科院分区:
--
文献类型:
--
作者:
Koch, Thomas;Katz-Bassett, Ethan;Heidemann, John;Calder, Matt;Ardi, Calvin;Li, Ke

文献摘要

参考文献

被引文献

相似文献

Anycast被用来提供包括网页和域名在内的内容,而且Anycast的部署正在增长。然而,先前检查根目录的工作表明,任播部署会导致显著膨胀,用户通常会被路由到不太理想的站点。我们重新评估任播性能,首先扩展先前对根域名中的膨胀的分析。我们发现,膨胀在根域名中非常常见,影响了超过95%的用户。然而,我们随后向用户展示了根DNS延迟\emph{几乎不重要},因为缓存非常有效。这些发现让我们产生了疑问:通胀是任意人固有的吗?或者通胀在重要的时候是有限的吗?为了回答这个问题,我们考虑微软的Anycast CDN服务延迟敏感的内容。在这里,延迟比根域名更重要几个数量级。也许是因为这个需求,CDN用户中只有35%的用户经历过任何膨胀,而且他们经历的金额比根域名要小。我们发现,由于广泛的对等和工程化,CDN选播延迟几乎没有膨胀。这些结果表明,之前关于Anycast效率低下的说法反映的是对单个应用程序的实验,而不是Anycast的技术潜力,它们证明了在衡量系统性能时上下文的重要性。
Anycast is used to serve content including web pages and DNS, and anycast deployments are growing. However, prior work examining root DNS suggests anycast deployments incur significant inflation, with users often routed to suboptimal sites. We reassess anycast performance, first extending prior analysis on inflation in the root DNS. We show that inflation is very common in root DNS, affecting more than 95\% of users. However, we then show root DNS latency \emph{hardly matters} to users because caching is so effective. These findings lead us to question: is inflation inherent to anycast, or can inflation be limited when it matters? To answer this question, we consider Microsoft's anycast CDN serving latency-sensitive content. Here, latency matters orders of magnitude more than for root DNS. Perhaps because of this need, only 35\% of CDN users experience any inflation, and the amount they experience is smaller than root DNS. We show that CDN anycast latency has little inflation due to extensive peering and engineering. These results suggest prior claims of anycast inefficiency reflect experiments on a single application rather than anycast's technical potential, and they demonstrate the importance of context when measuring system performance.
IANA IPv4 特殊用途地址注册机构
DOI: --
发表时间: 2010
期刊: Request for Comments
影响因子: --
作者:
G. Huston;Michelle Cotton;L. Vegoda
通讯作者: L. Vegoda
解除绑定的纽带:将 IP 与 Web 服务和套接字解耦,以实现 CDN 规模的强大寻址敏捷性
DOI: 10.1145/3452296.3472922
发表时间: 2021
期刊: ACM SIGCOMM
影响因子: --
作者:
Fayed, Marwan;Bauer, Lorenz;Giotsas, Vasileios;Kerola, Sami;Majkowski, Marek;Odintsov, Pavel;Sitnicki, Jakub;Chung, Taejoong;Levin, Dave;Mislove, Alan
通讯作者: Mislove, Alan
关于从 DNS 中消除根名称服务器
DOI: 10.1145/3365609.3365863
发表时间: 2019
期刊: ACM SIGCOMM Workshop on Hot Topics In Networking
影响因子: --
作者:
Allman, Mark
通讯作者: Allman, Mark
LatLong:诊断 CDN 的广域延迟变化
DOI: --
发表时间: 2012
影响因子: 5.3
作者:
Yaping Zhu;Benjamin Helsley;J. Rexford;Aspi Siganporia;Sridhar Srinivasan
通讯作者: Sridhar Srinivasan
老而黄金:探索 TCP 来设计 DNS 选播(扩展)
DOI: --
发表时间: 2020
期刊:
影响因子: --
作者:
G. Moura;J. Heidemann;W. Hardaker;Jeroen Bulten;J. Ceron;Cristian Hesselman
通讯作者: Cristian Hesselman