The ETags are missing from the response headers. Currently, I am using Google Cloud CDN to deliver the resources from Google Cloud Storage (bucket). When the resource is read directly from the bucket, the ETag is present, however, if the resource is obtained through the CDN the ETag is missing.
I am using:
- google cloud cdn
- google cloud storage
Here is a sample list of response headers of a resource that doesn't include the Etag header:
There are a number of other headers present but I do not believe them to be important for the matter at hand.
The below screenshot, shows the Cloud CDN Cache settings:
This is the metadata of an individual document within the bucket:
The question is, is there a Google Cloud CDN setting that is preventing the caching or ETags from showing in the response headers?
If any more information is needed to make this a bit more clear, please let me know so I can try and provide it.