Book Image

Backbase 4 RIA Development

Book Image

Backbase 4 RIA Development

Overview of this book

Backbase is a very powerful and complex JavaScript library, with many user interface components to help make web development easier. It allows the development of Rich Internet Applications (RIA) that run within all major browsers but its powers and complexity mean that the choice of component can be overwhelming. Understanding when and how to use the right component might not always be straightforward. This book makes that easier. This is a practical book that teaches you how to use the Backbase Client Framework effectively, with a complete overview and many examples. A core developer of the framework puts the technologies used into a wider perspective of existing web standards and a seasoned software architect explains why XML-based UI definition produces better web applications. The transparent use of AJAX technologies, for example to submit forms, or to retrieve updates for data grids, can be taken for granted with the Backbase framework. Packed with examples, the book shows you how to get the most from the library of UI components, and then extend the library with its own custom language. With this book in hand, it is easy to enable AJAX within your web application. You will be able to use the Backbase framework effectively, from basic applications to complex, custom-defined UI components. This book contains a complete overview of all the UI libraries available within the Backbase framework and shows examples for each element described. The Backbase framework offers an innovative Tag Definition Language (TDL), which allows developers to create new UI components that can be used as XML elements, in the same way as using the built-in GUI library. Using TDL brings considerable development advantages, and this book explains how. Significant attention is also given to architectural aspects of designing a web-application, showing sample applications using a model-view-controller approach.
Table of Contents (16 chapters)
Backbase 4 RIA Development
Credits
About the Authors
About the Reviewers
Preface

Application optimization


With optimization, we mean optimization for performance from the perspective of the user of your web application. Performance should be looked at last as we said earlier in this chapter. This is because optimizations in an application are always needed in a different area than where you thought they would be needed at the start of your development process. Looking at performance as the last activity of course does not mean that you should do stupid things during development, such as including long database queries in your web application.

You can find a wealth of information on the Web about making your applications faster. However, we base the discussion in the following sections on this site: http://developer.yahoo.com/performance/.

This site has a list of 34 points that you should look at when trying to optimize your site, subdivided into seven categories: Content, Server, Cookie, CSS, Javascript, Images, and Mobile. We will look at the first six of these categories...