How to upload files to S3 using a presigned URL without storing them in memory or on disk?

Author: dil-atiwariCreated Jan 28, 2025Updated Apr 8, 2026

I want to upload files directly to an S3 bucket using a presigned URL. The goal is to avoid loading the file into server memory or saving it temporarily on disk during the upload process.

Source: carrierwaveuploader/carrierwave