Klaus Enzenhofer

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Top Stories by Klaus Enzenhofer

Website Traffic Surge: Is It Marketing Driven or a Bot Attack? Nobody wants to be in the news with headlines like this, but it happens. I'd like to share an interesting experience I had when meeting on site with an anonymous customer. I've since noticed this same problem a few times, concerning email marketing, conversion impact, nervous operators, CDNs and what happens if there is no communication between the marketing teams and IT operations. Is it a bot/denial of service attack or a "successful" marketing effort that caused this increase in traffic and degradation in response time? It was back in January when I arrived at the operations center of the customer and instead of the usual warm welcome, the head of operations - let's call him Hugo - just said: "I'm glad you're here! I think we have a bot/denial of service attack from Asia currently going on. Look at th... (more)

Comparing User Experiences: Web, App and Mobile

With the establishment of mobile web and native mobile apps, your website isn't the only customer touch point anymore. Mike Austin, Director of e-Commerce at RoomsToGo said it best: "Our customers expect the same experience throughout all our channels no matter if it is the website, mobile site or the real physical store!" How can you measure the user experience across the various channels your customers use to interact with you? Let's see what we can do to make the user experience quantifiable so we can make informed data-driven decisions. If we look at the different channel type... (more)

Third-Party Content Management Applied

Today's web sites are often cluttered up with third-party content that slows down page load and rendering times, hampering user experience. In my first blog post, I discussed how third-party content impacts your website's performance and identified common problems with its integration. Today I want to share the experience I have had as a developer and consultant with the management of third-party content. In the following, I will show you best practices for integrating third-party content and for convincing your business that they will benefit from establishing third-party manage... (more)

Fact Finders: Sorting Out the Truth in Real User Monitoring

On my recent visits to Velocity, WebPerfDay and Apps World in London, Real User Monitoring (RUM) was the hot topic. That triggered my thinking about the differences between vendors. They all promise the same for a varying range of prices - from free to a couple thousand US dollars. What I found out is that there IS a big difference and - depending on what you want to do with RUM - you want to make sure you understand the capabilities and limitations of the available solutions. The false claim of 100% Coverage What all vendors claim to do is capture data from 100% of your users. Wh... (more)

You Only Control One-Third of Your Page Load Performance!

You don't agree with that? Have you ever looked at the details of your page load time and analyzed what really impacts Page Load Time? Let me show you with a real life example and let me explain that in most cases you only control 1/3 of the time required to load a page as the rest is consumed by third-party content that you do not have under control. Be Aware of Third-Party Content When analyzing web page load times we can use tools such as dynaTrace, Firebug or PageSpeed. The following two screenshots show timeline views from dynaTrace AJAX Edition. The timelines show all networ... (more)