High Scalability Building bigger, faster, more reliable websites.

It is fairly obvious that web site performance can be increased by making the code run faster and optimising the response time. But that only scales up to a point. To really take our web sites to the next level, we need to look at the performance problem from a different angle.

The Exceptional Performance group at Yahoo! has identified 14 best practices for making web pages faster. These best practices have proven to reduce response times of Yahoo! properties by 25-50%. They focus on the front-end, for example, why it's bad to use "@import" for including stylesheets and why ETags disable browser caching.

This google tech talk features these best practices and demonstrate YSlow.

Relevant links:
14 Rules for Exceptional Web Performance: http://developer.yahoo.com/performance/rules.html
YSlow: http://developer.yahoo.com/yslow/

Check out the book for details: High Performance Web Sites: Essential Knowledge for Front-End Engineers

Hi,

Some of the articles of the site claims profiling is essential.
Is there any established approach to profiling WEB apps?

Or it too much depends on technologies used?