Thomas,

I believe I am using the filesystem attachment. At least that's when I thought 
when using the following configuration:
        
> # enable attachment filesystem storage
> xwiki.store.attachment.hint=file
> xwiki.store.attachment.versioning.hint=file
> xwiki.store.attachment.recyclebin.hint=file

Any other way for me to proof?

thanks

Paul


On 12 janv. 2015, at 09:38, Thomas Mortagne <thomas.morta...@xwiki.com> wrote:

> When saving an attachment XWikiAttachment.updateContentArchive produce
> a base 64 String of the attachment (so a lot bigger than the
> attachment size) before copy it again as String[] (so again double the
> size in memory) and then sending it to the database (which is not
> quite the streamed thing you would expect in case of MySQL for
> example). There is thing that can be improved (but not much we can do
> about non streaming MySQL connector) but yes currently default
> attachment store is not exactly great to store 600 Mb files unless you
> allocate a looot of memory to your XWiki instance.
> 
> Filesystem attachment should support it well (been made just for this
> kind of use case after all), see
> http://platform.xwiki.org/xwiki/bin/view/AdminGuide/Attachments#HFilesystemAttachmentStore.

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