Book Image

ASP.NET Site Performance Secrets

By : Mattijs Perdeck
Book Image

ASP.NET Site Performance Secrets

By: Mattijs Perdeck

Overview of this book

Do you think that only experts with a deep understanding of the inner workings of ASP.NET, SQL Server, and IIS can improve a website's performance? Think again – because this book tosses that notion out of the window. It will help you resolve every web developer's nightmare – a slow website – with angry managers looking over your shoulder, raging calls from advertisers and clients – the lot. You don't have the time or energy to gain a thorough and complete understanding of ASP.NET performance optimization – You just need your site to run faster! This book will show you how.This hands-on book shows how to dramatically improve the performance of your ASP.NET-based website straight away, without forcing you through a lot of theoretical learning. It teaches you practical, step-by-step techniques that you can use right away to make your site faster with just the right amount of theory you need to make sense of it all.Start reading today and you could have a faster website tomorrow.Unlike other performance-related books, here you'll first learn how to pinpoint the bottlenecks that hold back your site's performance, so you can initially focus your time and energy on those areas of your site where you can quickly make the biggest difference. It then shows you how to fix the bottlenecks you found with lots of working code samples and practical advice, and just the right amount of theoretical detail.The first chapter details techniques for diagnosing performance issues using Waterfall charts. Subsequent chapters then each focus on one individual aspect of your website, providing you with numerous real-life scenarios and performance-enhancing techniques for each of them. In the last chapter, you learn how to effectively load-test your environment in order to measure the change in performance of your site without having to update your production environment – whether it is a new release or simply a small change in the database.
Table of Contents (19 chapters)
ASP.NET Site Performance Secrets
Credits
About the Author
About the Reviewers
Preface

Submitting forms asynchronously


On a classic ASP.NET page, when the browser POSTs form values, the server processes the values, regenerates the entire web page with a success or failure status message tacked on, and then sends the entire page back to the browser. The browser then replaces the existing page with the new page from the server.

To add to the overhead, the current state of the controls needs to be stored in ViewState because the entire page is replaced. The current state is sent in both, the request from the browser carrying the form data, and in the response from the server carrying the new page with the status message. ViewState is discussed in Chapter 9, Reducing Time to Last Byte in the ViewState section. An example of this type of form is in the downloaded code bundle in folder AsynchFormSubmission, page SynchSubmission.aspx. Obviously, it would be much more efficient to send the form values asynchronously in AJAX-style, so that the server has to send only the status message...