As a performance testing consultant for the last 10 years, you could say that it's second nature for me to look for performance patterns. One of the patterns I have observed over my career is that, regardless of the project size, company, or the technology being used, the same types of performance testing mistakes get made over and over and over. http://www.articleted.com/article/60337/10700/The-6-Most-Common-Software-Performance-Testing-Mistakes--and-How-to-Fix-Them