Chapter 3 3 CHAPTER Rule 3: Add an Expires Header 3 Fast response time is not your only consideration when designing web pages. If it were, then we'd all take Rule 1 to an extreme and place no images, scripts, or stylesheets in our pages. However, we all understand that images, scripts, and stylesheets can enhance the user experience, even if it means that the page will take longer to load. Rule 3, described in this chapter, shows how you can improve page performance by making sure these components are configured to maximize the browser's caching capabilities. Today's web pages include many components and that number continues to grow. A first-time visitor to your page may have to make several HTTP requests, but by using