What should a SysOps administrator recommend to fix this issue?
Add a Cache-Control header field with max-age=0 to the S3 object.
Change the CloudFront cache policy to Managed-CachingOptimized.
Disable bucket versioning in the S3 bucket configuration.
Enable content compression in the CloudFront configuration.
Explanations:
Adding aCache-Controlheader field withmax-age=0instructs browsers not to cache the object, forcing them to always retrieve the latest version from the server (S3 or CloudFront) on each request. This ensures users always see the most up-to-date information.
Changing to the Managed-CachingOptimized policy may not resolve the immediate issue of users seeing outdated content. This policy optimizes caching for certain scenarios but does not guarantee that updates are reflected instantly, especially if browser caching is involved.
Disabling bucket versioning in S3 does not address the caching issue. Versioning is for retaining multiple versions of objects but does not impact how browsers cache objects or how CloudFront serves them.
Enabling content compression in CloudFront can improve loading times but does not affect caching behavior. Users will still see outdated content if their browsers have cached the previous version of the file.
It seems to me that the answer is:
Add a Cache-Control header field with max-age=0 to the S3 object.