And I've come across a situation where I'm trying to figure out the best way to address it.

It tells me this...

The following resources are explicitly non-cacheable. Consider making them cacheable if possible:

And then lists a long list of files which are not cached. I'm trying to figure out...why isn't it being cached?

I have add expires headers on the various file extensions that it shows (in apache). The cache works on other pages (although these files might not be includes in the other pages).

What concerns me is that it says they are explicitly non-cacheable.

Any ideas?

If you need more information, please let me know. Thanks!