I’m very excited to be contributing a case study for a book on “Quality Assurance in PHP Projects” by Sebastian and Stefan. My particular section will focus on performance testing, something that I feel engineers often don’t think about from a quality assurance perspective or often measure incorrectly, leading to poor results and wasted time and effort.  My hope is to share some of the techniques I have used when testing scalability and performance, what has been useful, and what has not:

Incorrect application functionality is a detriment to any project, but poor performance and scalability can often lead to end-user dissatisfaction and exorbitant hardware expenses.

In the case of modern web application, expectations have made it necessary to provide responses within as little as 100 to 500 milliseconds. This puts a tremendous burden on not only achieving excellent performance, but maintaining consistent performance as code changes and …. (read more at the Quality Assurance in PHP Projects site)

We’ll be posting more case studies and news as time progresses, feel free to subscribe to our RSS feeds to learn more.  Now, if you’ll excuse me I have some more writing to do…