Cloud

Content Retrieval Using Cloud-Based DNS

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Executive Summary

Cloud-computing systems are rapidly gaining momentum, providing flexible alternatives to many services. The authors study the Domain Name System (DNS) service, used to convert host names to IP addresses, which has historically been provided by a client's Internet Service Provider (ISP). With the advent of cloud-based DNS providers such as Google and OpenDNS, clients are increasingly using these DNS systems for URL and other name resolution. Performance degradation with cloud-based DNS has been reported, especially when accessing content hosted on highly distributed CDNs like Akamai. In this paper, they investigate this problem in depth using Akamai as the content provider and Google DNS as the cloud-based DNS system.

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