Scalability and Performance

A scala describes the fact that the system can keep its performance, or degrade only slightly, if you put more load on to the system. A single performance number without giving a use case wouldn't be a good requirement for a development team. Another reason why it's important to stress this configuration thing is if we compare performance with scaleability. If you add twice as much load, the system should only get twice as slow, or half. The degradation of performance over the load should be linear, or nearly linear.