Caching and headers

[eluser]beemr[/eluser]
Woah Woah Woah Waittaminute!

This is half of the code from Suffix cache, but it is the most dangerous half.

If the suffix is not used as well as the header, you will overwrite the same cache file with each different mime-type. For example, if you are using your controller structure as the organizing principle behind your views and your assets (as I am), your page at example.com/welcome/index will be calling for a css at example.com/welcome/index.css and a js at example.com/welcome/index.js. Without recognition of a particular suffix for each mime-type, the next time someone links to example.com/welcome/index they will get the cached javascript.

If you refuse to recognize suffixes, then you will require a separate controller for each mime-type. I don't want to see that happen to Codeigniter.

Use Cache headers as a library if you must, but a core change should be DRYer than that.