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 Whether or not you are a fan of U.S. football – it was really hard to avoid this huge sports event on February 5. In addition to the actual game, it’s the Super Bowl commercials that – besides being very expensive to air – usually drive a lot of load on the websites of the companies th...Feb. 10, 2012 08:30 AM EST Reads: 1,053 |
 Although I started with Cold Fusion for application development, I did plenty brochureware sites with HTML. I believe the version was HTML 2.0 for IE 2.0. I lived in the browser world for years doing Cold Fusion, ASP, and HTML sites. When winforms and Smart Client with Web Services eme...Feb. 7, 2012 08:30 AM EST Reads: 1,227 |
 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....Dec. 30, 2011 03:00 PM EST Reads: 1,768 |
 Are you running an eCommerce site that relies on Third-Party Services such as Address-Validation, Credit Card Authorization or Mapping Services? Do you know how fast, reliable and accurate these service calls (free or charged) are for your web site? Do you know whether it has an impact...Nov. 27, 2011 11:30 AM EST Reads: 2,458 |
 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 ...Nov. 16, 2011 11:00 AM EST Reads: 2,742 |
 Response times are in many – if not in most – cases the basis for performance analysis. When they are within expected boundaries everything is ok. When they get to high we start optimizing our applications.
So response times play a central role in performance monitoring and analysis. ...Jun. 25, 2011 01:00 PM EDT Reads: 4,230 |
 Last week at Velocity we hosted a Birds of a Feather Session (BoF) and offered the attendees to analyze their web sites using dynaTrace Ajax Edition. Besides finding the typical performance problems (no cache settings, too many images, not minimized content, …) we found several sites t...Jun. 24, 2011 10:00 AM EDT Reads: 4,526 |
 From time to time I access my work emails through Outlook Web Access (OWA) – which works really great on all browsers I run on my laptop (IE, FF, Chrome). Guessing that Microsoft probably optimized OWA for its own browser I thought that I will definitely find JavaScript code that doesn...May. 31, 2011 02:26 PM EDT Reads: 3,135 |
 Just in time for the upcoming Webinar with The BonTon Stores, where we talk about the challenges in operating complex WebSphere environments, we had another set of prospects running their applications on WebSphere. Francis Cordon, a colleague of mine, shares some of the screenshots res...May. 12, 2011 08:45 AM EDT Reads: 4,721 |
 Last time I explained logical and organizational prerequisites to a successful production level application performance monitoring. I originally wanted to look at the concrete metrics we need on every tier, but was asked how you can correlate data in a distributed environment, so this ...May. 11, 2011 11:15 AM EDT Reads: 4,036 |
 In the last week my task was to create stable functional tests for a new eCommerce application. We picked several use cases, e.g.: clicking through the different links, logging in, searching for products and actually buying a product. We needed functional tests that run on both Interne...May. 10, 2011 10:00 AM EDT Reads: 4,339 |
 When we get engaged with prospects that are interested in our performance management solution we walk them through a Proof of Concept. We let them install dynaTrace on their own prior to the actual POC. During the POC we ask them to exercise typical use cases on their application that ...May. 5, 2011 10:30 AM EDT Reads: 5,426 |
 Recently there was a bigger discussion at dynaTrace around the cost of exceptions. When working with customers we very often find a lot of exceptions they are not aware of. After removing these exceptions, the code runs significantly faster than before. This creates the assumption that...Apr. 22, 2011 07:30 AM EDT Reads: 4,294 |
 I am currently working on a blog where I am going to explain how to do cross-browser testing and performance analysis using dynaTrace. Before I am going to blog that How-To I want to share with you one thing that I have noticed when executing my tests in Internet Explorer 8 and Firefox...Apr. 15, 2011 03:00 PM EDT Reads: 2,696 |
 Golfers follow the Masters 2011 - but - if you try to access masters.com right now you will get annoying popup messages from your browser telling you that you better stop JavaScript from executing because it takes too long. On my browser this looks like this:
JavaScript makes your b...Apr. 14, 2011 11:00 AM EDT Reads: 3,445 |
 If you are serious about Web Development then I am sure you are working on Web 2.0 Applications leveraging several JavaScript Frameworks, making XHR calls to the Server to retrieve dynamic content and also include 3rd party content such as Ads or Social Network Plugins. You probably al...Mar. 31, 2011 10:45 AM EDT Reads: 4,390 |
 When building distributed applications one of the central performance-critical components is serialization. Most modern frameworks make it very easy to send data over the wire. In many cases you don’t see at all what is going on behind the scenes. Choosing the right serialization strat...Mar. 10, 2011 10:45 AM EST Reads: 6,424 |
 Agile Development Practices have widely been adopted in R&D Organizations. A core component is Continuous Integration where code changes are continuously integrated and tested to achieve the goal of having "potential shippable code" at the end of every Sprint/Iteration.
In order to ve...Mar. 9, 2011 01:34 PM EST Reads: 2,938 |
 No matter what type of application we develop, coding validations is our everyday task. For years we have used a big variety of techniques and frameworks for validation with success. However, since some time we have a standard Java for validation, the Bean Validation specification (JSR...Mar. 3, 2011 11:00 AM EST Reads: 4,472 |
 2010 is over and there has been a lot going on in the application performance space. We started this project at the beginning of the year inspired by Stoyan Stefanov’s performance advent calendar of 2009. (There is also one for 2010).
Now twelve months later we have our 2010 performan...Feb. 9, 2011 03:46 PM EST Reads: 3,372 |
 If you have no intention of adopting TOGAF then does it make any sense for you to understand how TOGAF recommends planning a project? I think the answer is yes if somebody can explain it in simple terms. Since TOGAF is flexible and it recommends many techniques which you might find use...Feb. 3, 2011 10:32 AM EST Reads: 4,021 |
 Silly question – or is it? How do you judge if a methodology can be classified as agile methodology? Can Iterative or Spiral development methodology be classified as agile? What about Six Sigma or Lean process? On what basis will decide will you decide? If you go by the Forrester class...Jan. 25, 2011 05:45 AM EST Reads: 5,030 |
 We are using Confluence for both our internal Wiki as well as for our external Community Portal. I just came across a very nasty performance bug in the version we are running on our external system. We run 3.2 and the User Search Feature keeps me waiting several minutes each time I sea...Jan. 24, 2011 03:47 PM EST Reads: 3,152 |
 Alois Reitbauer explained in detail how dynaTrace continuously monitors several thousand URLs and uploads the performance data to the public ShowSlow.com instance. More and more of our dynaTrace AJAX Community Members are taking advantage of this integration in their internal testing e...Jan. 7, 2011 06:00 AM EST Reads: 4,622 |
 In this edition of our WPO Use Case series I discuss another very important use case. Load Time Optimization is most likely the most vital use case from an end user perspective. At the same time it is also highly important from a business perspective as studies by ShopZilla or Google a...Dec. 3, 2010 03:21 PM EST Reads: 3,266 |
 Timed with our new product launch we also updated our corporate website. Not only did we update the content, we also applied some of the Best Practices that Alois and I have been talking about in the past 12 months. When we introduced the new Performance Report in dynaTrace AJAX Editio...Nov. 12, 2010 03:48 PM EST Reads: 2,599 |
 In the first and second articles of this series I discussed benchmarking and different approaches towards optimization of web application. As already mentioned in the last article, as soon as you get used to working with Key Performance Indicators you will want to automatically monitor...Nov. 10, 2010 10:21 AM EST Reads: 4,680 |
 In my last article I discussed benchmarking as the first use case for Web Performance Optimization (WPO). This time I will take a closer look at optimization.
After we have discovered how our site behaves compared to our competition – or any reference we might want to benchmark agains...Oct. 21, 2010 03:03 PM EDT Reads: 3,390 |
 Hybrid Flash multicasting is the second and decisive wave of innovation that will enable enterprises to stream video without overtaxing their network infrastructures. It eliminates the usual tradeoffs between video consumption and network investment, regardless of increased video traff...Oct. 21, 2010 11:15 AM EDT Reads: 5,075 |
 Web Performance Optimization (WPO) constitutes of a set of activities targeted at improving the performance of web applications. First coined by Steve Souders WPO is developing into a growing industry. Every month new companies and projects offering web performance services emerge.
WP...Oct. 15, 2010 11:28 AM EDT Reads: 3,335 |
 In recent years there has been a growing interest in applying design patterns to various aspects of programming. One of the more well-known patterns is the Model-View-Controller pattern or MVC. This pattern has a great deal of appeal in the web design environment because it offers the ...Sep. 24, 2010 10:00 AM EDT Reads: 3,729 |
 Load Testing has traditionally been done In-House with load-testing tools using machines in your test center to generate HTTP traffic against the application needing to be tested for high volume transactions. With agile development practices, shorter release cycles and higher number of...Sep. 23, 2010 09:45 AM EDT Reads: 4,290 |
 In 2005, our company, ServusXchange LLC, was a fledgling SaaS information technology startup focused on business process and workflow collaboration solutions. Led by our co-founder, Brian Javeline, we identified an emerging opportunity, an unanswered need in the home remodeling and rep...Sep. 10, 2010 09:45 AM EDT Reads: 5,701 |
 Inspired by the Top 10 Performance Problems post which focuses on Server-Side performance problems taken from companies such as Zappos, Thomson, Monster and Novell I came up with the Top 10 Client-Side performance problems in Web 2.0 applications I’ve seen when working with our dynaTr...Sep. 8, 2010 11:37 AM EDT Reads: 4,690 |
 What factors make you think a web page is good or not? What keeps on that page longer than others? On the one hand it is the content on the page and whether this content is of interest to you. On the other it is the velocity with which you can navigate through the individual pages. Hig...Aug. 30, 2010 03:50 PM EDT Reads: 3,572 |
 I occasionally get invited to do JavaScript/AJAX Performance Workshops. Last week I spent two days with a group of dynaTrace AJAX Users that work in a performance task force group within their R&D Organization. I asked them about the reasons for this Client-Side Performance Initiative...Aug. 3, 2010 02:16 PM EDT Reads: 5,382 |
 An Oracle database provides several v$ views to query information about the database instance, including statistical information that can be used for monitoring and problem analysis purposes. Rene Nyffenegger wrote a nice Summary on Oracle’s v$ views that gives an overview of all avail...Jul. 26, 2010 03:21 PM EDT Reads: 6,048 |
 JavaScript can save your day or it can cause you nightmares. JavaScript and XHR (XmlHttpRequest) enable what the industry considers to be Web 2.0 – meaning highly interactive web sites where some application logic is pushed down to the client into the browsers JavaScript engine. As wit...Jul. 22, 2010 02:44 PM EDT Reads: 4,825 |
 The ZK framework provides a variety of paradigms to develop Web applications. One the one hand it is always nice to have options, but on the other this can cause un-intentional paradigm disparities when several developers are using the framework to develop an application without a cons...Jul. 1, 2010 03:33 PM EDT Reads: 9,165 |
 With more than 3 million downloads, Selenium is the world’s most popular functional testing framework. It allows web developers and QA professionals to automatically test how an application functions on multiple browsers, such as Firefox, Internet Explorer and Chrome and across operati...Jun. 17, 2010 02:27 PM EDT Reads: 7,851 |
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