任播研究综述  

Survey on Anycast Research

作　　者：周敏苑 郑嘉琦 窦万春[1] 陈贵海[1] ZHOU Min-Yuan;ZHENG Jia-Qi;DOU Wan-Chun;CHEN Gui-Hai(State Key Laboratory for Novel Software Technology(Nanjing University),Nanjing 210023,China)

机构地区：[1]计算机软件新技术国家重点实验室(南京大学),江苏南京210023

出　　处：《软件学报》2023年第1期334-350,共17页Journal of Software

基　　金：国家自然科学基金(62172206,61972254)。

摘　　要：任播通过将相同IP地址分配到多个终端节点上,利用BGP实现最佳路径选择.近年来,随着任播技术发展越来越成熟,任播被广泛运用到DNS和CDN服务上.首先全方位介绍了任播技术,随后讨论了任播技术目前存在的问题并将这些问题归结为3大类:任播推断的不完善,任播性能无法保证,难以控制任播负载均衡.针对这些问题,阐述了国内外最新研究进展,总结了任播研究工作中的相关问题及改进方向,为相关领域的研究者提供有益的参考.Anycast uses BGP to achieve the best path selection by assigning the same IP address to multiple terminal nodes.In recent years,as anycast technology has become more and more common,it has been widely used in DNS and CDN services.This studyfisrtlyintroduces anycast technology in an all-round wayand then discusses current problems of anycast technology and summarizes these problems into three categories:anycast inference is imperfect,anycast performance cannot be guaranteed,and it is difficult to control anycast load balancing.In response to these problems,the latest research progress is described.Finally,the problems in solving anycast problems and the direction of improvementare summarizedtoprovide useful references for researchers in related fields.

关 键 词：任播 IP地址 站点 内容分发网络 域名系统 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]