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)

Myths and Truths About Performance Measurement Overhead

In this third article of my Performance Almanac I discuss the role of overhead in performance management. As a performance management solution provider we’re frequently asked “How much overhead does your solution have?” This question is however a bit more complex to answer than just giving a single number. When discussing this topic I have also realized that there are some dogmas on people’s minds which are not necessarily true. I collected the most common myths and truths about performance measurement overhead and will discuss them here. Truth: Performance Measurement Produces... (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)

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)

Is There a Business Case for Application Performance?

We all know that slow performance – and service disruption even more – affects our business services and eventually our revenue. At the same time we say that major parts of companies are not willing to invest in performance. In this post I will discuss why we find ourselves in this paradox and how to escape it. Applications fail and management does not care dynaTrace recently conducted a study on performance management in large and small companies. The quick facts paint a horrible picture. 6o percent of the companies admit that they do not have any performance management processes... (more)