The increasing adoption of mobile applications as part of a company’s online services leads to the question whether we need to monitor like other parts of our IT infrastructure. As they are part of our shipped application services we need to ensure they are working properly. However, not every application must be monitored the same [...]

One of the big topics in the BigData community is Map/Reduce. There are a lot of good blogs that explain what Map/Reduce does and how it works logically, so I won’t repeat it (look here, here and here for a few). Very few of them however explain the technical flow of things, which I at [...]

dynaTrace AJAX Edition 3.4 now gives you full JavaScript, AJAX, Network and Rendering analysis support for Mozilla Firefox 8 and 9 as well as Internet Explorer 8 and 9. If you want to optimize the performance of all your users’ browser versions, have a look at the dynaTrace AJAX Edition Premium to guarantee the best [...]

Obviously, cloud computing is not just a fancy trend anymore. Quite a few SaaS offerings are already built on platforms like Windows Azure. Others use Amazon’s EC2 to host their complete infrastructure or at least use it for additional resources to handle peak load or do “number-crunching”. Many also end up with a hybrid approach [...]

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’ve presented 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 made as [...]

Most production monitoring systems I have seen have one major problem: There are too many JVM’s, CLRs and Hosts to monitor. One of our bigger Customers (and a Fortune 500 Company) mastered the challenge by concentrating on what really matters: The Applications! Ensure Health The following dashboard is taken directly from the production environment of [...]

Some time back I planned to publish a series about java memory problems. It took me longer than originally planned, but here is the second installment. In the first part I talked about the different causes for memory leaks, but memory leaks are by far not the only issue around java memory management. Edit: A [...]

Today is great day for us. Due to our continuously growing user base we have decided to migrate our blog to a bigger server. As a performance blog we strive to provide great performance to our readers. Our performance monitoring has shown us that our end user response times were not that great so we [...]

Like everybody else it took me a while to wrap my head around the BigTable concepts in Cassandra. The brain needs some time to accept that a column in Cassandra is really not the same as a column in our beloved RDBMS. After that I wrote the first Web Application and run into a pretty [...]

MMT 28 was a great conference. A lot of great talks and a very interested audience. I was lucky to speak about Web performance. As promised you can find my slides below.  Also feel free to post questions on my talk. Web Performance Optimzation View more presentations from Alois Reitbauer.

Last time I talked about the key differences between RDBMS and the most important NoSQL databases. The key reasons why NoSQL databases can scale the way they do is that they shard based on the entity. The „simplest“ form of NoSQL database shows this best, the distributed Key/Value Store. Last week I had the chance [...]

The busiest online shopping time in history has brought a significant increase in visits and revenue over last year. But not only were shoppers out there hunting for the best deals. Web performance experts and the media were out there waiting for problems to happen in order to blog and write about the business impact [...]

The busiest online shopping season is about to start and it’s time to make a quick check on whether the top shopping sites are prepared for the big consumer rush or whether they are likely going to fail because their pages are not adhering to Web performance best practices. The holiday rush seems to start [...]

I have been working with performance sensitive applications for a long time now. As can be expected most of them have to use the database at one point or the other. So you inevitably end up having a connection pool. Now to make sure that your application is not suffering from waiting on connections you [...]

Are you running an eCommerce site that relies on 3rd 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 on your end users in case one [...]

The success of the Web performance movement shows that there is increasing interest and value in fast websites. That faster websites lead to more revenue and reduced costs is a well proven fact today. So being exceptionally fast is becoming the dogma for developing web applications. But what is exceptionally fast and how hard is [...]

You do not 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 [...]

Velocity Velocity comes to Europe and we will are there. You can find our presentations and links here. Today we had a talk on What it means to deliver exceptional performance and tomorrow Andi will give a Lightning Demo. Hope to see you there What it means to deliver exceptional performance View more presentations from [...]

The term Business Transactions and Business Transaction Management is widely used in the industry but it is not always well understood what we really mean by it. The BTM Industry Portal provides some good articles on this topic and is definitely recommended to check out. The general goal is to answer business relevant questions that [...]

The QCon in Santa Clara  starts on Monday, 14th of November. I will be there as part of the dynaTrace team. If you have a chance to be there make sure not to miss my Talk on DevOps and Performance Management. I will also be on the Performance and Scalability Panel Thursday Morning, so don’t [...]