See spring-projects/spring-framework#26790 for background information.
We could provide configuration properties to make the multipart configuration easier with WebFlux. Currently this is supported by org.springframework.http.codec.multipart.DefaultPartHttpMessageReader. Note that we need to carefully consider the configuration keys, as several of them don't apply if the "streaming" mode is selected.
Comment From: bclozel
Closing in favor of #26254