摘 要:域名服务是因特网最基本的网络服务之一,大部分 CDN 需要依赖 DNS 来实现内容调度,域名解析的准确程度和响应速度对整个网络服务质量而言非常重要。通过分析当前传统 CDN 调度存在的不足,结合谷歌等公司提出的 Edns-ClientSubnet 扩展协议,文章提出了基于改进版 ECS 的 CDN 调度优化方案,并就具体现网实践过程中智能分区、CNAME 调度、存储优化等关键要点进行阐述。
关键词:DNS;ECS;CDN
DOI:10.19850/j.cnki.2096-4706.2021.19.012
中图分类号:TP393 文献标识码:A 文章编号:2096-4706(2021)19-0047-03
Practice and Exploration of CDN Precise Scheduling Current Network Based on ECS
XIANG Jiusong, FAN Shidi
(China Telecom Jiangsu Intelligent Cloud Network Dispatching Operation Center, Nanjing 210037, China)
Abstract: Domain name service is one of the most basic network services on the Internet. Most CDNs need to rely on DNS to realize content scheduling. The accuracy and response speed of domain name resolution are very important to the quality of service of the whole network. By analyzing the shortcomings of the current traditional CDN scheduling, combined with the Edns-Client-Subnet extension protocol proposed by Google and other companies, this paper puts forward the CDN scheduling optimization idea based on the improved version of ECS, and expounds the key points such as intelligent partition, CNAME scheduling and storage optimization in the process of network practice.
Keywords: DNS; ECS; CDN
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作者简介:向九松(1976—),男,汉族,江苏扬州人,高级工程师,本科,研究方向:IP 承载网、DNS;樊士迪(1996—), 女,汉族,江苏连云港人,硕士研究生,研究方向:IP 承载网、 DNS。