Fintech Image Storage: Tenant Isolation and Recovery Come Before Delivery

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The article argues that fintech teams storing AI-generated images should prioritize enforceable tenant isolation and recovery over delivery features. It recommends tenant-owned key prefixes chosen by the server, private reads via short-lived signed URLs, and deterministic keys that make retries safe. The author notes that database records should be written only after a successful upload, so ownership of stored bytes stays clear after partial failures. AWS S3, Azure Blob Storage, Cloudflare R2, and a single-API option are compared on recovery boundaries rather than ranked, with each requiring verification of versioning, replication, and CORS behavior.

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ProgrammingDEV Community ·

Naval architecture student recounts his first month learning to code in Bangladesh

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