Content retrieval using cloud-based DNS

摘要: Cloud-computing systems are rapidly gaining momentum, providing flexible alternatives to many services. We study the Domain Name System (DNS) service, used convert host names IP addresses, which has historically been provided by a client's Internet Service Provider (ISP). With advent of cloud-based DNS providers such as Google and OpenDNS, clients increasingly using these for URL other name resolution. Performance degradation with reported, especially when accessing content hosted on highly distributed CDNs like Akamai. In this work, we investigate problem in depth Akamai provider system. demonstrate that is rooted disparity between number location servers two providers, develop new technique geolocating data centers cloud providers. Additionally, explore design space methods be effective. Client-side, cloud-side, hybrid approaches presented compared, goal achieving best client-perceived performance. Our work yields valuable insight into Akamai's system, revealing previously unknown features.