The answer
No. Store or generate thumbnails through an explicit image-processing workflow if the gallery requires them. Track that workflow's status and failure behavior in the application.
What is Cloudflare R2 object storage?
Does uploading an image to R2 automatically create a thumbnail?
More FAQs in What is Cloudflare R2 object storage?
Store the stable object key and relevant database identifier. Generate temporary access URLs when needed, since an expiring URL should not become the permanent reference.
No. The application defines and enforces that relationship through its records and authorization logic. Storage keys alone should not determine a user's access permissions.
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