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Monitor. Resolve. Prevent.

Alois Reitbauer

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Top Stories by Alois Reitbauer

The use of transactions is a cornerstone when building database applications. However in our daily work, we often do not really care much about them. In many cases they are handled implicitly for us by the (J EE) container or application framework – such as Spring – we are using. We rely on these frameworks to do a lot of the heaving lifting around transactions. At a pure JPA level there is a lot of transaction-related logic going on under the hood. This article discusses transactions at the JPA and database (JDBC) layer and how they play together and affect the functionality and performance of our applications. JDBC and the Database Before we dive into the details let’s spend some time on the basics. What are transactions all about? Transactions ensure that our interactions with the database follow the so-called ACID principles. In short we want to ensure that not... (more)

A Step-by-Step Guide to dynaTrace AJAX Edition

  The dynaTrace AJAX Edition has been out there as an Alpha for a couple of weeks. It gave you the first impression what was to come. All the feedback we have received (like that from Steve Souders, and all that has come in via the contact form and the online forum) in that time made it possible to improve the tool from its early versions to its first "official" release version. In this article I'll discuss why dynaTrace Labs built the AJAX Edition, which problems it solves and how to use it in an example with Google maps. Why dynaTrace AJAX dition - and why for free? At dynaTrace... (more)

Building Your Own Amazon CloudWatch Monitor in Five Steps

Cloud Computing on Ulitzer Amazon EC2 offers the CloudWatch service to monitor cloud instances as well as load balancers. While this service comes at some cost (0,015$/hour/instance) it offers useful infrastructure metrics about the performance of your EC2 infrastructure. While there are commercial and free tools out there which provide this service, you might not want to invest in them or add another tool to your monitoring infrastructure. This post will provide step-by-step guidance on how to extend your monitoring solution to retrieve cloud metrics. The code sample is based on t... (more)

How to Measure Application Performance

Measurement is the most central concept in any performance-related activity. If you are not measuring you are blind. As important as measuring per se is collecting the right measurements. Which metrics are the right ones depends on what you want to do. However there are some general principles which – when followed – can make your life much easier. Many people think that measuring application performance means measuring response times. While this is a good starting point it is not the whole story. First of all it is not that straightforward what response times actually mean. Dep... (more)

Applying Maslow’s Pyramid to Application Performance

This time I take an a bit of an unconventional approach towards defining performance management. The idea for this article came through a number of customer engagements, where the same question came up over and over again: “How do we start with Application Performance Management and what should we do?” Over time I developed a simple model which I called the performance management pyramid. The basic idea is to assign performance management activities to several levels. Each level serves a specific need and builds on top of the lower ones. Just like a building it starts with the b... (more)