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Caching getSignedUrl without DB?

In my tRPC using app, I store image files on Cloudflare R2. The client browse these images by listing them over a query method, that generates a signed url for each with

getSignedUrl

getSignedUrl

. However for each request the client makes, these signed URL change all the time, making the browser really overfetch these resources. My idea was storing these signed URLs in the db, but I don't like the extra latency the DB reads would introduce. Making

getSignedUrl

getSignedUrl

deterministic would be a much cleaner solution, unfortunately the package doesn't support this. What are my options here?

Caching getSignedUrl without DB?

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Caching getSignedUrl without DB?

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