other formats (Re: [Dev] 4Suite RDF and ZOD)

[Eric Gerlach]

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At 11:57 PM 02/11/02 -0800, David McCusker wrote:
 >The performance impact of extra
 >layers is generally neglible as long as there are not many layers,
 >and
 >as long as copying doesn't happen heavily at each layer boundary.

I agree completely with your entire post, David.  The one thing I will
add is the following, which I consider an important rule:  The
performance impact of a layer is not negligible if and only if the
layer itself is negligible.  That is to say, the only time a layer has
a discernable performance impact is if it does nothing (i.e.
delegation only).

I am going to reply to a point in your other post too:

At 01:42 PM 03/11/02 +0000, Bill de hÓra wrote:
 >David McCusker wrote:
 >
 >> The phrase "RDF-based PIM" makes it sound like RDF is somehow
 >> pervasive
 >> in the architecture so it cannot be replaced with something else. I
 >> didn't
 >> get the idea this was the long term desire.  Other ways of writing
 >> content
 >> persistently might join Morgan's RDF prototype.
 >
 >Perhaps this is what happens when you specify technologies as
 >requirements ahead of use cases.

That is a *VERY* important point.  The technology used should be
dictated by the use cases, not the other way around.  I eventually
think that we'll come back to RDF et al., but that's not how we should
start.  Would you believe I just took a course on this at work?

Cheers,

Eric

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