I ran across this page in one of the blogs I read but I do not remember which. I installed YSlow to check out my web sites. It was an easy check. The rules I consistently failed were rules 3 and 4. I came back here for the explanations. Implementing fixes for these rules can be complicated. I will look into them when I have both the curiosity bug and the spare time.
Rules for High Performance Web Sites
The Exceptional Performance team has identified 13 rules for making web pages fast. Each rule is discussed in the Developer Network Blog articles listed below.
- Make Fewer HTTP Requests
- Use a Content Delivery Network
- Add an Expires Header
- Gzip Components
- Put CSS at the Top
- Move Scripts to the Bottom
- Avoid CSS Expressions
- Make JavaScript and CSS External
- Reduce DNS Lookups
- Minify JavaScript
- Avoid Redirects
- Remove Duplicate Scripts
- Configure ETags
- Make Ajax Cacheable
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