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

Image size


Reducing the size of your image files will reduce your bandwidth costs and reduce load times. Unlike caching and parallel loading, this approach is not dependent on the vagaries of browsers and proxies. Later on, we'll see various tools with which you can reduce image file sizes. But first, let's have a look at choosing the optimal image format based on the content of the image.

Using the optimal image format

Most browsers recognize at least the three main image formats: JPEG, GIF and PNG. Each image format stores the image in a compressed form, using its own compression algorithm, and supports different features such as animation:

Format

Compression

Supports Transparency

Supports Animation

JPEG

Lossy: Sacrifices image quality for better compression. Optimized for smooth color transitions, millions of colors. Produces artifacts around sharp transitions of color.

No

No

PNG

Nonlossy: No loss of quality. Compresses better than GIF, except for tiny images.

Yes*

No...