[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: How could RDDL be distributed ?
Michael Mealling wrote, > Miles Sabin wrote, > > To do the job you'd need some mechanism for ensuring that all > > the DTDs were cached locally before pulling out the wire. > > It'd be nice if that local caching mechanism got along well > > with a mechanism for connected distribution and replication. > > That's one way but I don't think it solves the whole of the > problem. Your still associated resources that are what I call > authoritative. I think you want a solution that allows you to > associate locally scoped resources as well. Actually I think it's simply two different problems which might have related solutions, 1. Allow for local overriding of authoritative resources. 2. Allow for distribution and replication of authoritative resources. (2) is the problem I'm worrying about ... my starting point being a worry about the hosts for popular DTDs/Schemas becoming a single point of failure. Interestingly the two problems are dissimilar in a very important way. (1) explictly wants to allow for substitution/ overriding (that's it's whole point). (2), OTOH, almost certainly wants to verifiably forbid substitution/overriding (or at least make any such modification visible to ultimate recipients). That seems to imply a need for signatures to be accomodated by any such protocol. Cheers, Miles -- Miles Sabin InterX Internet Systems Architect 5/6 Glenthorne Mews +44 (0)20 8817 4030 London, W6 0LJ, England msabin@i... http://www.interx.com/
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