Ajax in Action

Chapter 8. Performance

This chapter covers

• Profiling Ajax applications
• Managing memory footprints
• Using design patterns for consistent performance
• Handling browser-specific performance issues

In the previous three chapters, we have built up our understanding of how Ajax applications can be made robust and reliable—able to withstand real-life usage patterns and changes in requirements. Design patterns help us to keep our code organized, and the principle of separation of concerns keeps the coupling in our code low enough to allow us to respond quickly to changes without breaking things.

Of course, to make our application really useful, it also has to be able to function at a reasonable speed and without bringing the rest of our user’s computer ...