Fast ASP.NET Websites

PART 1 DEFINING PERFORMANCE. .................................1
1 High-speed websites 3
1.1 Why optimize? 4
1.2 The financial impact 4
The business impact 5 ■ The search engine ranking impact 5
The mobile user impact 6 ■ The environmental impact 6
1.3 How to optimize 6
Profile 7 ■ Identify 7 ■ Implement 7 ■ Monitor 8
1.4 Where to optimize 8
1.5 The Performance Golden Rule 9
1.6 Summary 9

2 First steps toward a faster website 11
2.1 The basics of HTTP 11
Understanding an HTTP GET request 12 ■ Understanding
an HTTP GET response 13 ■ Understanding HTTP
status codes 15
2.2 Empty cache vs. primed cache 16
2.3 Tips and tools for interpreting performance charts 17
What does it all mean? 17 ■ Google Chrome developer tools 19
Internet Explorer developer tools 21 ■ Firebug 21
Safari Web Inspector 21 ■ HTTPWatch 22 ■ WebPagetest 22
Fiddler 22
2.4 Performance rules to live by 23
Yahoo! YSlow 24 ■ Google PageSpeed 25
2.5 Summary 26
PART 2 GENERAL PERFORMANCE BEST PRACTICES.........27
3 Compression 29
3.1 What is compression? 29
3.2 Why should I use compression? 30
3.3 Pros and cons of compression 32
3.4 Types of compression 32
Gzip 32 ■ Deflate 33 ■ SDCH 33
3.5 Accept-Encoding 33
3.6 The Surf Store application 34
3.7 Adding compression to your website 35
Using IIS to add compression to a website 36
Using a Web.config file to add compression to a website 38
Adding compression with other techniques 40
3.8 The results 40
3.9 Summary 42
4 Caching: The sell-by date 43
4.1 What is HTTP caching? 44
4.2 IIS and HTTP caching 46
4.3 Web.config settings 50