Google Cloud CDN json resource ETag missing from response headers
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.
Just a hunch here, but I see that you have Dynamic Compression enabled and the content-type you have listed is application/json which is a compressible object type. I am suspecting that Cloud CDN is compressing the object which is altering the object and could be stripping your etag value. As a test, perhaps turn off Dynamic Compression to see if the etags bleed through. If the etag is visible after turning off the compression, you have your answer.
The Cloud CDN service will use the last modified time in lieu of an etag so there is no risk of having out of date content.
- Using RedisTagAwareAdapter in Symfony 4.4
- How To Cache Article Text Derived With Embedly API?
- Simple Cache Implementation in C
- Get all keys from Redis Cache database
- Nginx and disappearing cache
- How can I know if the $http response is brought from cache - angularjs
- Python in-memory cache with time to live
- Configure Redis Sentinel in Laravel 5.5
- CSS compression & combining / js minification - Better to do at runtime or at build time?
- Compile a referenced LESS file into CSS with PHP automatically
- Why does python lru_cache performs best when maxsize is a power-of-two?
- JavaScript: how to force Image() not to use the browser cache?
- local cache for a github repository?
- How to retrieve a list of Memory Cache keys in asp.net core?
- ReactJS: How to prevent browser from caching static files?
- False-sharing and OpenMP
- Symfony 6 how to enable Doctrine DBAL Cache Adapter as a cache pool?
- Use two loop bodies or one (result identical)?
- Rails low level caching with Solid Cache: getting `warning: already initialized constant`
- Is it there any LRU implementation of IDictionary?
- How to allow Caching API endpoint that requires Authorization header?
- Do GPU architectures have Persistent Last-Level Cache Across Kernel Launches?
- Asp.Net Core: should I use AddScoped or AddSingleton on a cache service
- Speeding up initial ltree, GiST-indexed queries
- How to clear the server cache in iis
- Implementing Cache manager using Dot Net core
- Stop Nextjs 13 from caching Firebase result/call
- Why race condition occurs when hardware has ensured coherency
- Ignore files that have already been committed to a Git repository
- Why use QueryClient.prefetchQuery instead of useQuery for caching in react-query?