2009/5/26 Stefan de Konink <[email protected]> > Chris Browet wrote: > >> If you just want to materialise the entire database at a certain >> interval, don't you think this will grow very fast? >> >> >> I don't know. A baseline would only consist of a list of all objects id >> with their associated version number at a certain point in time, not the >> actual objects... >> > > Think of a way X; it consist of n nodes. If you take the this way at > changeset Y, you would still have to find all nodes positions at time(Y). >
Sure, but as we'd take a version snapshot of all objects anyway, the X way will still be only say 8 bytes for the id and n (don't know the definaition for versions, let's assume 4) bytes for the version. That is 12 bytes per object * 360.000.000 is ~4.5Gb. Assuming daily, one year rotating, online baselines, that makes 1.5 Tb, i.e. 2 big disks (with overhead), i.e. 200€. Not that expensive IMHO...
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