hkhl.
CDCloudflare Developers
•Created by hkhl. on 1/4/2024 in #workers-help
[Cloudflare image resizing] persistent Error 9412 /HTTP 415 (apparently no origin revalidation)
Hi, please direct me to a different channel if it fits better elsewhere. I am doing worker image resizing as described here: https://developers.cloudflare.com/images/image-resizing/resize-with-workers/.
Works as designed in general, but when I bulk add images to the origin storage (public Azure Blob Storage), while some of the new images are already requested through the worker, we sometimes get images that are stuck in an error state.
These requests then always return
HTTP 415 Unsupported Media type and Cf-resized: err=9412 long after the origin image upload is complete (~ 60 min.) The only way to fix this is to purge the complete cache in the dashboard manually.
I did a lot of debugging, and I don't see why Cloudflare does not revalidate the origin.
- There is no custom caching in the worker
- The origin does not send cache-control headers.
- Manually purging a single upstream URL as described here https://developers.cloudflare.com/images/image-resizing/troubleshooting/#caching-and-purging does not work. (So it is some kind of cache issue)2 replies