This is what I ended up doing. I've been using Cloudfront for a while now, but Cloudflare is free, and people seem to indicate it is just as fast if not faster.
I have my static assets on a sub-domain, so I just set cloudflare to cache everything on that subdomain (and left it off on everything else).
I have my static assets on a sub-domain, so I just set cloudflare to cache everything on that subdomain (and left it off on everything else).