I'm working on some stuff to enable the streaming of large downloads from a database to a user through a servlet and I think I've gotten everything planned out except for the upload part.

First of all, I'm talking about large files(ignoring for a minute that http isn't the best way to upload files). If anyone know how the apache commons fileupload works could you tell me how large uploads are handled?

Is there a size limit?

Is the entire upload stored in memory until fully uploaded?

Thanks.