34 best practices

http://developer.yahoo.com/performance/rules.html#minify

Yahoo’s YSlow
http://developer.yahoo.com/yslow/

* Make Fewer HTTP Requests
* Use a Content Delivery Network
* Add an Expires Header
* Gzip Components
* Put Stylesheets at the Top
* Put Scripts at the Bottom
* Avoid CSS Expressions
* Make JavaScript and CSS External
* Reduce DNS Lookups
* Minify JavaScript
* Avoid Redirects
* Remove Duplicates Scripts
* Configure ETags
* Make Ajax Cacheable
More …
14 Rule by Steve Souders
http://stevesouders.com/hpws/

- Combined and minimized JavaScript and CSS files used throughout the site
- Implemented CSS sprites for frequently-used images
How we improved performance on Google Code

How To Optimize Your Site With GZIP Compression
http://betterexplained.com/articles/how-to-optimize-your-site-with-gzip-compression/

Speed Up Your Javascript Load Time
http://betterexplained.com/articles/speed-up-your-javascript-load-time/

Speed Up Your Javascript, Part 2: Downloadable Examples!
http://betterexplained.com/articles/optimized-javascript-example/

10 Tips for Writing High-Performance Web Applications
http://msdn.microsoft.com/en-us/magazine/cc163854.aspx

IIS Compression in IIS6.0
http://weblogs.asp.net/owscott/archive/2004/01/12/57916.aspx

HOW TO: Enable ASPX Compression in IIS
http://support.microsoft.com/kb/322603

Google Speed
http://code.google.com/speed/articles/

IE+JScript Performance Recommendations
Part 1
http://blogs.msdn.com/ie/archive/2006/08/28/728654.aspx
Part 2
http://blogs.msdn.com/ie/archive/2006/11/16/ie-javascript-performance-recommendations-part-2-javascript-code-inefficiencies.aspx

Part 3
http://blogs.msdn.com/ie/archive/2007/01/04/ie-jscript-performance-recommendations-part-3-javascript-code-inefficiencies.aspx

Cheers..Happy coding..

Suresh Behera