Web Performance Best Practices
from: http://code.google.com/intl/zh-CN/speed/page-speed/index.html
Web Performance Best Practices
* Optimizing caching
1. Leverage browser caching
2. Leverage proxy caching
* Minimizing round-trip times
1. Minimize DNS lookups
2. Minimize redirects
3. Combine external JavaScript
4. Combine external CSS
5. Optimize the order of styles and scripts
6. Parallelize downloads across hostnames
* Minimizing request size
1. Minimize cookie size
2. Serve static content from a cookieless domain
* Minimizing payload size
1. Enable gzip compression
2. Remove unused CSS
3. Minify JavaScript
4. Defer loading of JavaScript
5. Optimize images
6. Serve resources from a consistent URL
* Optimizing browser rendering
1. Use efficient CSS selectors
2. Avoid CSS expressions
3. Put CSS in the document head
4. Specify image dimensions
相关阅读：
YSlow
《高性能网站建设指南》
Google的YSlow——Page Speed（附插件下载）
如何提高网页的效率 14条建议（IT168版）
如何提高网页的效率（上篇）——提高网页效率的14条准则
如何提高网页的效率（下篇）——Use YSlow to know why your web Slow
挣脱浏览器的束缚（3） - 两个连接还不够“并行”（老赵的其他几篇相关文章也值得一读）