ted hardie hardiequalcommcom 604 pm 0700 8708 tim bray wrote well presence http scheme requires use protocol fact high proportion accesses resources go sideways various caching schemes notion scheme implies protocol common old misconception measure accesses arrive conclusion high proportion accesses resources go sideways various caching schemes elaborate means point accuracy idea scheme implies protocol varies enormously schemes nearly pure identifier without strong bindings specific dereferencing protocol tag info come mind schemes really strong binding specific protocol mechanics specific uri schemes amount instructions engage see rfc 4501 example defines dns uri scheme using scheme definition explicit usage model describes common resolution mechanism using dns retains point resolution mechanisms possible use dns context quite clear quite clearly understood common case regards ted _______________________________________________ ietf mailing list ietfietforg httpswwwietforgmailmanlistinfoietf fri 08 aug 2008 003613 0400 new schemes vs recycling http past lc comments draftietfgeoprivhttplocationdelivery08