The performance of a web application plays a critical role in how an application is perceived by its users. It is important to measure it, identify the causes if it changes and react swiftly to any unexpected changes. This article describes an industry leading tool, New Relic, and how it can be used to monitor and improve your site performance.
Setting up a good web application monitoring system can be tiresome, but it's well worth it. Without the monitoring tools the only thing we could tell is if our site is performing as expected or not. In order to improve the performance we have to be able to identify the worse performing user actions and profile them independently to pinpoint the cause. New Relic achieves that and more in just a few screens, all without manually adding any profiling code to your application.