On Fri, Sep 27, 2013 at 12:35 PM, Christian Tismer <tis...@stackless.com> wrote: > Hi, > > I saw me subscribed to zc.beforestorage , today.
Congratulations! ;) > If I'm not mislead, versions are no longer supported in 4.0, or > is this still a supported approach? "versions" were removed in 3.9. > I think history should not depend on having pack()'ed or not, > but an explicit snapshot feature that puts a set of objects > into some history object. <shrug> That would be a new feature. One I've even contemplated, sort of, in a notional FileStorage2 design that stores data in a sequence of files, which would allow point-in-time snapshots. > Has that been discussed, and can someone please point me at it? Undoubtably, but I can't think of an instance in particular. beforestorage takes advantage of the fact that most ZODB storage implementations keep a limited sequence of transactions to provide a limited form of time travel and, most importantly, to provide a temporary snapshot of a database that's being written, mainly for use with DemoStorage. Jim -- Jim Fulton http://www.linkedin.com/in/jimfulton _______________________________________________ For more information about ZODB, see http://zodb.org/ ZODB-Dev mailing list - ZODB-Dev@zope.org https://mail.zope.org/mailman/listinfo/zodb-dev
