Couldn't that work? Upload by chunks via static buffer (which I kinda thought is how most web servers actually do uploads?), save to a file, then likewise load+

Couldn't that work? Upload by chunks via static buffer (which I kinda thought is how most web servers actually do uploads?), save to a file, then likewise load+process+store in 1k chunks or whatever. Depending on what processing you're doing and the workload characteristics (most obviously, number of clients) it might be painful, but I think it could work fine with a fixed memory footprint?