Klaus Enzenhofer

Subscribe to Klaus Enzenhofer: eMailAlertsEmail Alerts
Get Klaus Enzenhofer: homepageHomepage mobileMobile rssRSS facebookFacebook twitterTwitter linkedinLinkedIn


Top Stories by Klaus Enzenhofer

The Impact of JavaScript Errors These days we are moving more and more logic towards the user into the browser to achieve higher performance and better user experience. There are Single Page Application frameworks like AngularJS, React, Ember and others supporting this trend. If it works, everything is fine. But with this trend a JavaScript error can become a website killer. What does this mean? Below you can see the same page twice, but depending on the browser used, you get a product list from which you can make a selection…or NOT! The difference is the result of a simple JavaScript error. Figure 1: JavaScript error causing a product search to return no result Here is another example of an online email interface showing a list of contacts, or in this case NONE, due again to a simple JavaScript error. JavaScript errors today can ruin the user experience of a web ap... (more)

Case Study: Too Fast for the User

I just heard an interesting story from Runtastic, who is one of our Mobile Real User Monitoring customers. Runtastic's main mobile app allows their users to track their sport activities such as running, biking, hiking or skiing. They had a user complaining about too high speed. He didn't actually complain about the performance of the app but instead complained about his average speed during his workout as calculated by the app. After his one hour biking session, the app showed the he covered a distance of 490 km - that would probably be a world record and give him the yellow shir... (more)

With Confidence Through the Holiday Season: Manage Success in Production

In our last two articles, we discussed what we have learned from last year's holiday season as well as things that we can do in the preparation phase for this year's upcoming event. In this blog we show you those dashboards and data points you need throughout the holiday season to make it a success. The top goal for eCommerce sites is to ensure high conversion rates as this converts into business. IT's responsibility is to ensure that consumers can use the eCommerce site in an "enjoyable" way. But there is much more than measuring the UpTime or Response Time of your services. The ... (more)

Don’t Miss 50% of Your Paying Customers on Their Mobile Devices

"We expect that the revenue made via our mobile apps will cross the 50% mark within this year!" Most of our eCommerce customers are starting to say this to us. These customers have driven their businesses to the web and have successfully applied Real User Monitoring (RUM) for web. They have found and fixed many of the common performance problems described in Top 8 Performance Landmines, 5 Steps to improve eCommerce Performance and What if A/B Testing fails to improve conversions. As these customers start seeing an increase in revenue from mobile they have to extend their RUM cap... (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)