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I'm surprised that backblaze doesn't checksum the files on the user's computer to see if they already have it on their servers to avoid duplicate uploads.
by brink 5y ago
I'm surprised that backblaze doesn't checksum the files on the user's computer to see if they already have it on their servers to avoid duplicate uploads.
- macintux 5y agoThe first time that backfires, though…
- odux 5y agoThey apparently do but only within a users computer (or account, I don't remember). I would be pretty uncomfortable they comparing my files checksum to a master list of sorts
- paledot 5y agoThis is exactly what Dropbox does: they hash a file, compare with all known hashes, and deduplicate accordingly. The file is then encrypted with the hash of its contents.
- password4321 5y agoDropbox had to quit doing this 10 years ago https://news.ycombinator.com/item?id=2478567#2478608 https://news.ycombinator.com/item?id=2478567#2478608 Apparently Dropbox notices they already have that file, and instead of you uploading it they just make it appear in your account.