API Documentation

Or should that be: `W3TC\CdnEngine_S3_Cf->invalidate(array(‘\wp-content\myimages\image1.jpg’));

Hello,

You can use w3tc_cdn_purge_files (deprecated but works)

Thanks @vmarko – can you confirm that this would only invalidate the file/URL in Cloudfront and not PURGE the file?
I only want to call the invalidate path, when an image is updated (it would have the exact same URL).
An example of what I’m trying to do:
https://cdn.willstocks.com/wp-content/uploads/optimum-gravatar-cache/avatar/2.jpg?d=thb95k
This image is a user/commenter/author avatar. A daily check occurs to see whether a Gravatar has updated (using @jomisica’s OGC plugin) and I use W3TC to push those images up to my CDN (AWS S3 + Cloudfront, where I store all of my other image assets). If an image is updated, it gets a new query string on the end, to denote the datetime of the change. However, I saw yesterday that regardless of this query string, Cloudfront was still caching 2.jpg as the old image until I invalidated that specific URL.

Hello @willstockstech,

Yes, it only sends an invalidation request to CDN.
It’s also possible to configure CloudFront so that it will respect query strings via “Query String Forwarding and Caching” parameter, so invalidation will not be required.

Nice one – thanks @vmarko. I thought I had the query string forwarding enabled, however I will triple check this!