加快网站访问速度的要点

加速站点的要素：

1. Make Fewer HTTP Requests
2. Reduce DNS Lookups 
3. Avoid Redirects
4. Make Ajax Cacheable
5. Post-load Components
6. Preload Components
7. Reduce the Number of DOM Elements
8. Split Components Across Domains
9. Minimize the Number of iframes
10. No 404s

原文来自yahoo开发社区：

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