Getting started

High Availability of eCommerce sites and of performance are closely related. In the case of eCommerce sites, High Availability must be spoken of in terms of the performance of the site.

A site that is online but not performing to give any indication of it being available can, of course, not be considered available. Thus, the performance metrics such as response time and throughput of the site have to be factored into the very definition of High Availability.

In this part of the book, we discuss the definition of High Availability and introduce a number of performance terms and other WebSphere Commerce terms that are used throughout the reminder of this book.

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