Recommended CDN with "Accept" Cache Key

[mstaack]

Hey there,

i am in the progress of setting up our imgproxy solution.

docs mention (https://docs.imgproxy.net/configuration/options#avifwebp-support-detection):

When AVIF/WebP support detection is enabled, please take care to configure your CDN or caching proxy to take the Accept HTTP header into account while caching.

any recommended cdn providers which support that?

looked at:

• cloudflare.com does only support custom cache keys in their enterprise (yeah right, contact sales pricing) plan
  https://developers.cloudflare.com/cache/how-to/cache-keys/
• bunny.net cdn their cache key "vary" does not support the accept header

or what is the best way to approach cdn caching?

[mstaack]

okay bunny.net does support vary header for webp/avif if i read this correctly:
https://support.bunny.net/hc/en-us/articles/360012186820-How-does-Vary-Cache-work

[mstaack]

also cloudflare seems to support vary header for images in the pro plan:
https://developers.cloudflare.com/cache/advanced-configuration/vary-for-images/

[DarthSim]

We usually recommend AWS CloudFront since it allows pretty precise tuning caching behavior.

Both Clouflare's and Bunny's solutions look like what you're looking for, but they have URL extension limitations.

[mstaack]

what exactly do you mean by url extension limitations? plan was to use bunny.net

[DarthSim]

From Bunny's docs:

This key is only applied for URLs with the following extensions: jpg, jpeg, webp, png, gif.