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Sven Hammar

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Top Stories by Sven Hammar

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 attack can range from social engineering, viruses and trojans, network sniffing, and even brute-force attacks. What makes an APT attack new and different is that it is perpetrated by well-financed organizations that have a specific goal to achieve. While the ordinary hacker will simply look for... (more)

Quick Tip Video: AppDynamics and Google Analytics Integration

Today’s Quick Tip video will highlight one of the most exciting features of the Apica WebPerformance portal: AppDynamics and Google Analytics integration. This new functionality enables you to correlate and compare live data from all three platforms directly in the WebPerformance portal. The result is a better understanding of how external factors (for example, website traffic or user behavior) affects your site’s performance. Take a look and let us know if you have any questions about this new capability. ... (more)

Load testing like a developer

Creating highly targeted load tests for your web server doesn’t have to be complicated. And it won’t be, at least not if you know what to look for. The secret is to approach a load test with the mind of a developer. You’re not going to run a test just to punish your web server. You’re trying to gather valuable data that will aid you in keeping your web applications fast and responsive. To do this, let’s look at two simple steps to create a scientifically sound load test. 1. To plan your test, think like a user. The first step is to outline exactly what type of web experience you’re... (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)

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)