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From "Tobias Bocanegra" <tobias.bocane...@day.com>
Subject Re: about document history
Date Mon, 20 Mar 2006 23:11:40 GMT
hi sam,
> do you know if any work is going on concerning storing deltas instead of
> total copies?
no, currently not. the difficulty hereby is, that the versionstorage
must be 'browsable' like normal content, i.e. the version nodes inside
the versionstorage must reflect the complete state of the node, from
the time it was versioned. currently,this is simply done, by using a
'normal' persistence manager, and dynamically mapping the nodes in the
so an eventual delta can only happen on the persistence layer, or by
ciompletely replace the version manager.

> will it be possible in the future to change a running environment from
> storing copies to storing deltas?`
if implemented, yes.

> will there be a solution for "changing" all versions stored as copies in the
> past to saved deltas?
yes. basically doing an export/import.

i'm interrested, what is the usecase for your questions. i.e. what is
your estimate on how many versions of documents (in total) you will
have, and how much space is used by them? are there tousands of 1mb
documents, having hunders of versions (> 100gb), or what is the scale?

regards, toby
-----------------------------------------< tobias.bocanegra@day.com >---
Tobias Bocanegra, Day Management AG, Barfuesserplatz 6, CH - 4001 Basel
T +41 61 226 98 98, F +41 61 226 98 97
-----------------------------------------------< http://www.day.com >---

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