Foreword
Preface
A. The Importance of Frontend Performance
Tracking Web Page Performance
Where Does the Time Go?
The Performance Golden Rule
B. HTTP Overview
Compression
Conditional GET Requests
Expires
Keep-Alive
Theres More
1. Rule 1: Make Fewer HTTP Requests
Image Maps
CSS Sprites
Inline Images
Combined Scripts and Stylesheets
Conclusion
2. Rule 2: Use a Content Delivery Network
Content Delivery Networks
The Savings
3. Rule 3: Add an Expires Header
Expires Header
Max-Age and mod_expires
Empty Cache vs. Primed Cache
More Than Just Images
Revving Filenames
Examples
4. Rule 4: Gzip Components
How Compression Works
……
9. Rule 9: Reduce DNS tookups
10. Rule10:MinifyJavaScript
11. Rule 11: Avoid Redirects
12. Rule 12: Remove Duplicate Scripts
13. Rule 13:Configure Elags
14. Rule 14: Make Ajax Cacheable
15. Deconstructing 10 Top Sites
Index