how to cache css, images and js?

Question

I would like to have images, css, and javascript cached client-side on their browser when they load up a web page. There are so many different types of caching I am confused

Answer 1

This is best done in IIS or in your config file - make sure your CSS/JS/images are set to never expire.

When you reference them from your code, I suggest appending a version or build-date to the filename, e.g. script.js?20100120, so that when you do come around to changing them, you just need to change the version to force a refresh from all the browsers that have cached it.