Author Archive | Jason Read

Alexa Top 10,000 DNS Marketshare – May 6, 2013

The post provides an update on DNS marketshare statistics for May 2013. This is a follow up to our previous posts in March and April 2013. Alexa Top 10,000 DNS Marketshare – May 6, 2013 The following table provides a comparison of DNS provider marketshare between Apr 8 and May 6 2013 for the top […]

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DNS Provider Marketshare Summary – March 2013

Every few months we mine the DNS servers used by the top 10,000 Alexa sites. We then use various techniques including hostname and IP class C matching, and DNS lookup validations to correlate the DNS servers with specific DNS services like UltraDNS, Dyn and AWS Route 53. We call this point-in-time analysis a DNS marketshare […]

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Comparison and Analysis of Managed DNS Providers

Introduction This blog post is the culmination of year’s effort researching and developing methods for analyzing and comparing managed DNS services. During this time, we provided access to our analysis and solicited feedback from any DNS provider that would listen. We would like to thank our contacts with UltraDNS, Cotendo, Amazon Web Services and NetDNA […]

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An unofficial EC2 outage postmortem – the sky is not falling

Last week Amazon Web Services (AWS) experienced a high profile outage affecting Elastic Cloud Compute (EC2) and Elastic Block Storage (EBS) in 1 of 4 data centers in the US East region. This outage caused some high profile website outages including Reddit, Quora and FourSquare and scores of negative PR. In the proceeding days media outlets […]

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Is Joyent Really 14X Faster than EC2 and Azure the “Fastest Cloud”? Questions to Ask About Benchmark Studies

Many are skeptical of claims that involve benchmarks. Over the years benchmarks have been manipulated and misrepresented. Benchmarks aren’t inherently bad or created in bad faith. To the contrary, when understood and applied correctly, benchmarks can often provide useful insight for performance analysis and capacity planning. The problem with benchmarks is they are often misunderstood […]

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Introducing Web Services for Cloud Performance Metrics

Over the past year we’ve amassed a large repository of cloud benchmarks and metrics. Recently, we are making the most of that data available via web services. This data includes the following: Available Public Clouds: What public clouds are around and which cloud services they are offer including: Cloud Servers/IaaS: e.g. EC2, GoGrid Cloud Storage: […]

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Do SLAs really matter? A 1 year case study of 38 cloud services

In late 2009 we began monitored the availability of various cloud services. To do so, we partnered or contracted with cloud vendors to let us maintain, monitor and benchmark the services they offered. These include IaaS vendors (i.e. cloud servers, storage, CDNs) such as GoGrid and Rackspace Cloud, and PaaS services such as Microsoft Azure […]

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An unofficial EC2 outage postmortem – the sky is not falling

Last week Amazon Web Services (AWS) experienced a high profile outage affecting Elastic Cloud Compute (EC2) and Elastic Block Storage (EBS) in 1 of 4 data centers in the US East region. This outage caused some high profile website outages including Reddit, Quora and FourSquare and scores of negative PR. In the proceeding days media outlets […]

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