.net - Add Expires or Cache Control Header to static content in IIS

Question

After running the YSlow plugin on a site, I saw that one of the recommendations was to add far future expires headers to the scripts, stylesheets, and images.

I would like to do this, does anyone have experience with this? I am using IIS 7 and I read an article from Microsoft but am not interested in disabling caching for asp pages or images, I actually want to force caching for static content. Also, the ideal situation would not exist in code, but in the web server configuration.

So, what steps would I have to take to have every image, javascript file, and stylesheet to be cached?

Answer 1

Can this be done in IIS 6?

To configure content expiration

1. In the Internet Information Services (IIS) Manager administrative tool, right-click Your Web Site, and then click Properties.

2. In the Properties dialog box, on the HTTP Headers tab specify expiration time, and then click OK.