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Sven Hammar

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Top Stories by Sven Hammar

Retailers might have started offering online holiday discounts earlier than in years past, but that didn’t seem to have much effect on retail activity or sales this Cyber Monday. According to IBM, Internet sales rose 30.3 percent yesterday, making it the biggest online shopping day ever. Online traffic for the day has not yet been reported, but the exact number of web shoppers isn’t really that important, at least as far as website performance is concerned. That’s because, with only minor exceptions, the top online retailers continued to deliver the consistent availability and quick response times that we reported during Thanksgiving weekend. Two retailers were able to retain the near-instantaneous response times of the previous four days. Liberty Media Corp and Systemax delivered average response times of 0.51 seconds and 0.92 seconds, respectively. Several others,... (more)

2013: The Year of Application Optimization for the Device-Driven Internet

For the past few years, our friends at VMblog.com have run an annual prediction series forecasting the trends most likely to drive adoption of cloud and virtualization technologies in the upcoming year. This is the second year in a row that they’ve invited me to contribute, and I thought long and hard about the assignment. After a deep gaze into my crystal ball, a deliberate shuffle of the tarot cards, and much careful contemplation, I settled on six major predictions, six changes to how solution providers and organizations will approach performance management in 2013. Some of t... (more)

Lessons Learned from the Amazon Web Services Outage

On Monday, Amazon Web Services — the leading provider of cloud services — suffered an outage, and as a result, a long list of well-known and popular websites went dark. According to Amazon’s Service Health Dashboard, the outage started out as degraded performance of a small number of Elastic Bloc Store (EBS) storage units in the US-EAST-1 Region, then evolved to include problems with the Relational Database Service and Elastic Beanstalk as well. WEBSITE DOWN: AWS outage takes down Reddit and other popular sites The only surprising thing about this AWS outage was that anyone was sur... (more)

Twitter’s Performance Metrics During the Political Conventions

While all eyes were on Tampa, Fla. and Charlotte, N.C. these last two weeks for the Republican and Democratic National Conventions, we had our eyes, and monitors, on Twitter to see if and how these events impacted Twitter’s website performance. As is the case with most big news events today, people took to Twitter in a big way for real-time information and broke some records in the process. After the Republican National Convention (RNC) concluded last week, Twitter reported that 4 million tweets were sent out in total about the RNC. Following the conclusion of President Obama’s s... (more)

Load Testing to Detect Advanced Persistent Threats

I’ve written before about how capacity planning and load testing tools can help companies prepare for a Distributed Denial of Service (DDoS) attack, but we’ve begun to see a new class of attacks emerge, called Advanced Persistent Threats (APT), whose aim is much more sinister than a slow response time or “page not found” error. What is an Advanced Persistent Threat? The intentions behind APT are all about espionage — not just state-sponsored espionage but also extensive and well-organized industrial espionage. APT is not about any particular technology or technique. The actual a... (more)