CHAPTER 1
What is Performance
Performance refers to the speed at which an application functions. It is a multifaceted aspect of quality. When we’re talking about web applications, the time it takes your application to be presented to your users is what we will call web performance. The speed at which your application responds to your users’ interactions is what we’ll call runtime performance. These are the two facets of performance that we will be looking at.
Performance in the context of web (and especially mobile web) development is a relatively new subject, but it is absolutely overdue for the attention it has been getting.
In this book we ...
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