do not write multi-part upload data to disk

[gregjhogan]

Writing to /tmp will wear out your OS drive pretty fast pumping hundreds of terabytes into minikeyvalue. Since RAM is good enough for non-multipart uploads, it should be fine for multi-part uploads, too. Maybe we want to suggest using a RAM disk and add expiring partial uploads where the final PUT never happens within some time period?

[geohot]

I mean /tmp should be a ramdisk. But I'm supportive of the Go managing these as ram buffers directly.

[gregjhogan]

I wasn't sure how complicated buffering in Go would be, but we definitely should add something to expire stale multi-part upload data in Go either way.

[UlisseMini]

/dev/shm is always a ramdisk on linux

[awskyfall]

I mean /tmp should be a ramdisk. But I'm supportive of the Go managing these as ram buffers directly.