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Feb 23
3 min

Root Cause and Solutions to T24 Transact Locking Issues

Locking is a mechanism used in computer programming to prevent multiple threads from accessing a shared resource simultaneously to maintain consistency and avoid data corruption. When a thread acquires a lock, it has exclusive access to the resource, and other threads that attempt to access the resource are blocked until the lock is released. You can implement locking in various ways, such as using semaphores, mutexes, or monitors. The locking mechanism choice depends on the

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Jan 4
2 min

Speed is everything but not everything is Speed

Nobody enjoys slow loading or erroneous applications, and bad user experience already significantly impacts commercial revenue. I’m still wondering why the average response time of mobile sites is 19 seconds. Personally speaking, I won’t wait more than 5 seconds for a page to load. Whether you follow a waterfall or agile-based development approach, there are three critical touchpoints you need to consider if you want to reach a satisfying user experience. I call these touchpo

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Mar 7, 2022
2 min

How to avoid that your complex systems fail in complex ways

With the rise of technology, the complexity of our business applications has dramatically increased. As a result, virtualization, microservices, and artificial intelligence are about to dominate our IT landscape soon. Expensive downtimes In one of my recent projects several years ago, I was tasked with a firefighting exercise. Customers were unable to configure their mobile device contracts; sales staff started to open new contracts via the paper-way, and back-office teams we

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Sep 26, 2019
3 min

The cost of performance issues

Performance is your most important feature. If you’ve ever experienced performance issues in your customer-facing applications, I’m sure you’ll agree. How to calculate the cost of performance issues As we all know; as soon as a slowdown is detected, the uncovered resolution costs of the defect begin. Imagine your product has already passed the acceptance-testing phase and your final end-to-end production scenario load test has been executed. Surprisingly, the memory utilizati

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Sep 12, 2019
5 min

Top 6 Layers you must include in your Performance Analysis

Troubleshooting performance issues can sometimes be a tough nut to crack! Customers are complaining about slow response times, and C-Level executives are increasing the pressure on their IT folks while we jump from one trial-and-error tuning to the next! Is the answer to fully automate the process of finding, escalating, and guiding to the root cause of the actual problem behind slowdowns? Many books about tools promise that it is, but the opposite is often the case. It all c

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Jul 25, 2019
3 min

Cucumber-based performance testing

Shifting performance testing to the left is certainly a hot topic these days. All major companies have either implemented this practice already or have huge test-improvement programs lined up. But why do you need to do early performance testing, and what does it involve? Is it a case of your performance engineer joining the development team and contributing to their scrum meetings? The answer is yes, but that’s still not enough… Make Sprint-performance testing part of your st

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Jun 27, 2019
4 min

Rethink performance engineering

We often find ourselves busy with too many things at the same time. Living in this kind of multitasking mode not only affects our health, but also our daily work. It often leads to disaster, in fact. Customers feel frustrated when our new IT services fail to meet their performance expectations. And when you discover that the new application just doesn’t perform well in a real-world situation, you realize how all your investments in building a new product were a waste of money

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Mar 21, 2019
2 min

How workload modeling improves your performance-test results

Your project is running crazy when—in a last minute call—you’re asked to validate the response time and throughput of the new application before deployment to production. How will you approach this challenging task? Either you can ask for performance requirements or you can decide to sort it out yourself. For brand new IT services, the former is the best choice. If there’s already a production system, you should consider tool-based workload modeling. But how does this workloa

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Oct 26, 2018
3 min

Avoid sunk costs in your automation projects

A worrying number of defects have cropped up late in your project. Although your teams are in their best fighting mode, the test engineers can’t test all the changes before deployment on the production environments. Does this scenario sound familiar? Most of us in the testing industry have experienced such situations. The question is: What have you learned from such disasters? Here, I’ll share my experiences from recent automation projects, and give you some ideas on how to a

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Oct 18, 2018
4 min

Simplify performance engineering with smarter tooling

As the complexity of our IT landscape increases, our customers have higher performance expectations than ever before. Watching how my two teenage children navigate on their frequently used websites recently, I learned that: they expect websites to load instantly they click at lightning speed they abandon a ‘slow’ site in less than a second The trouble is, many of our most beautifully designed applications won’t fulfill such high-performance expectations. Soon, once the iGen g

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Aug 25, 2018
3 min

The Value of Performance and Security

What is the real value of rich applications developed with performance and security in mind ,and why do we often realize far too late that we have lost something important? Questions like this help us to realize what is going wrong and how to adjust our behavior to avoid expensive pitfalls. This post outlines the reasons why we realize that our investments in performance and security are often misplaced. Before you have it Our customers are in the driver seat because it’s the

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Aug 11, 2018
2 min

The 4 Ps of Performance Engineering

Recently, I have been asked for a brief description on how to achieve outstanding responsive and lightning speed loading applications. A detailed description of all the why and how won’t keep in your mind for a long time. A simpler shortcut to a permanent strategy for performance is my theory of the 4 Ps: “Proactivity is key to protect your customers from poor performance.” In this post, I will outline how the 4 Ps help you to understand and avoid performance hotspots. Proact

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Nov 18, 2017
5 min

Load Testing Strategy for AJAX

Gone are those times of static websites and thanks to AJAX and other new concepts the interaction with web-based services are very natural nowadays. Content gets updated dynamically, and there is no longer a need to wait for an updating web page. In this post, I will give you some background on the technology behind, followed by pros and cons and a recommended load and performance testing strategy. Fifteen years back in time web pages were boring but extremely lightweight, ea

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Oct 2, 2017
2 min

6 Pitfalls that waste your Performance Engineering budget

Many companies are cutting their IT costs. Outsourcing, out-tasking, and elimination of redundancies are some of those measures how organizations try to reduce spending on digital services. The competition is high and on the long term will most likely only those businesses survive which were able to transform their culture from reactive to continuous improvement. In this post, I will shine a light on the performance engineering topic and give you some insights of how you can

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Aug 17, 2017
3 min

Yesterday’s Performance Engineering approach can’t stop today’s Bottlenecks

New technology is popping up almost overnight, and the complexity of our applications is increasing. Virtualization, artificial intelligence, microservices, and machine learning are just the beginning, and there is much more to come. Some people argue that performance is the most important feature. I entirely agree with this statement because slow loading applications disturb the customer’s attention span. Once they mentally left their intended activity due to pure speed, the

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Jul 29, 2017
1 min

Performance Test Cheat Sheet

#Performance #PerformanceTest #PerformanceTestCheatSheet

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Jul 23, 2017
2 min

Does Fragmented Monitoring Keep you from Enterprise Insights

The best business application struggles from time to time, responds slow to user queries, or is temporarily not available. Organizations learned that monitoring of critical components is the way to go. In this post, I will explain benefits and drawbacks involved in this development. Monitoring Evolution More than 30 years back in time, system resource utilization and algorithm used were the most important performance criteria. Bad programming practices and a shortage of syste

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Jul 14, 2017
2 min

Performance Optimization is like painting the Golden Gate Bridge

Users speed expectations are on the rise and companies started investing in the optimization of their services and business processes. Outstanding players such as Amazon understood that the competition is high and bad user experience leads quickly to growing abandon rates. When those frustrated users start to spend their money on other, more reliable websites, it’s already too late. The endless optimization game When is a business application fast enough, and who will set the

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Jul 6, 2017
3 min

Performance by Nature

User experience is the most important success criteria, and the expectation of our users is permanently on the rise. According to a recent study from Akamai, in 2006 the average business user expected response times of 4 seconds. Today, 49% expect load times of 2 seconds or below. In this post, I will shine a light on reasons why organizations are failing to meet users speed expectations, followed by simple steps towards performance by nature. Let’s start with your understand

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Jun 12, 2017
2 min

Why Companies Invest in Load and Performance Tests

Over the past decade companies, large and small have started with the integration of load and performance testing into their development process. There are many good reasons for this evolution. In this post will outline why testing of performance requirements has become so popular. Naturally, load & performance testing reduces the risk of severe outages or system failures dramatically. Even if hundreds of your software testers conduct thousands of manual tests on a new applic

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