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Dcc.upload get file path and upload direct to s3

HI all,

for my use case of dcc.Upload, I would like to get the file path and do a post request to upload the file to my s3 bucket.
Is there anyway I can do this without having to load the file first to my server then to s3? Ideally I can just upload directly to s3 and I really don’t need to read the entire content of the file at all. Sometimes the file can be pretty big and it crashes the dash server. It would be awesome to have something the equivalent of

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@sptkl, any luck yet?