[Plugin: W3 Total Cache] CDN populated, but not being used by site

I’ve also tried with the following settings with no success:

Page Caching Method: disk enhanced
Minify Caching Method: disk
DB Caching Method: disk
CDN: Mirror
Debug Mode: Enabled

Unfortunately any other caching settings have nothing to do with the CDN. Do you actually have an account with a CDN provider?

Like I said, I’m using MaxCDN. I’ve created an account, used the URL from the pull zone and created an A record like cdn.foobar.com that points to the MaxCDN URL.

If I go to cdn.foobar.com (which is an A record to MaxCDN like cdn.foobar.netdna-cdn.com), I can see cached content with debug output (when I have debug enabled).

So basically, the CDN has the content. Its the blog that isn’t pulling it from the CDN or redirecting to the CDN.

And to clarify, cdn.foobar.com is listed as the Replace default hostname with field.

Sorry I missed that. The CDN pulls it from your site and the plugin edits the cache files of your site to make images etc use the address configured in your settings (the CDNs address). So no, there’s no redirect.

Ok, so when I go to cdn.foobar.com directly, I can see that the css and js files now have URLs like https://cdn.foobar.com/wp-content/themes/headway-156/media/css/print.css. When I look at foobar.com, should not the css and js files have URLs like https://cdn.foobar.com/….? If so, the CDN is properly pulling my site, but the plugin does not seem to editing the cache files to change the URLs to https://cdn.foobar.com…

Then CDN is not enabled on general settings tab or you have not completed any minify settings or you are not matching any custom files on the CDN settings tab.

On cdn.foobar.com, the HTML is all minified, so I *think* the minify options are ok.

The CDN enable button is checked under general settings and type is set to origin pull (mirror).

In general settings, minify enable is checked, and caching method is set to APC.

In the minify settings, the following options are checked:

HTTP compression (gzip)
HTTP compression (msie6)
Rewrite URL structure
Automatically upload modified files
max lifetime: 60 seconds
update external files every: 60 seconds
HTML settings: minify
HTML settings: don’t minify for admins
HTML settings: inline css minification
HTML settings: inline JS minification
JS minify settings: Minify
CSS minify settings: Minify

JS file management is set to Default with no JS files added.
CSS fiel management is set to Default with No CSS files added.

Under CDN settings, these options are checked:
Host wp-includes/ files
Host active theme files
Host minified CSS and JS files
Host custom files
wp-includes file types to upload: wlwmanifest.xml;*.css;*.js;*.gif;*.png;*.jpg
Theme file types to upload: *.css;*.js;*.gif;*.png;*.jpg;*.ico
Custom file list: favicon.ico

I tried changing custom file list to * but that didn’t change anything.

Any ideas?

JS file management is set to Default with no JS files added.
CSS fiel management is set to Default with No CSS files added.

This means that no CSS or JS files are set to be minified. So unless you’ve added the paths to the files in your theme to the custom files section on the CDN settings tab, the plugin is not going to try to modify the URL to use the CDN for you.

I tried changing custom file list to * but that didn’t change anything.

Don’t do that, I don’t even know what will happen if you do. I’m glad that it doesn’t work. You just told the plugin to change all URLs to use the CDN, which is not a safe operation.