Is it possible that nginx will not buffer the client body?

[li zJay]

Hello!

is it possible that nginx will not buffer the client body before handle the
request to upstream?

we want to use nginx as a reverse proxy to upload very very big file to the
upstream, but the default behavior of nginx is to save the whole request to
the local disk first before handle it to the upstream, which make the
upstream impossible to process the file on the fly when the file is
uploading, results in much high request latency and server-side resource
consumption.

Thanks!
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