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List:       freenet-dev
Subject:    Re: [Freenet-dev] Proposal: Information Dispersal Algorithm instead of simple file splitting
From:       david () aminal ! com
Date:       2000-07-31 19:59:13
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On Mon, Jul 31, 2000 at 04:12:38PM +0100, Ian Clarke wrote:
> 
> > Ever since the discussion of file splitting and raid levels, I've been
> > casually looking around for algorithms. This looks interesting, but
> > unfortunately I'm not a member of the ACM so I can't download the paper.
> > Perhaps some kind soul would upload it to Freenet, or make it available in
> > some other manner.
> 
> The problem with using an algorithm which will reconstruct data from an
> incomplete selection of parts may undermine Freenet's caching.  It would
> be difficult to persuade client writers to download more parts than are
> nescessary, yet this will result in superfluous parts being lost in
> Freenet, and you are back to square one.
>


Yes, it's a trade off. Better chance of being able to retrieve a complete
document right after it's inserted vs. shorter life of all the parts. 

Add the other benefits already mentioned, and I think it's worth exploring.

I'd still like to read that darn paper if I could get ahold of it.

David Schutt

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