Complex URN/Handle/DOI resolution
•
id part1
id
server a1
URLn
web
server
n1
page
id
web
browser
URLb
web
server
b1
URLc
.
.
.
.
.
.
id
server a2
. . .
id
server ai
web
server n2
. . .
web
server nz
web
server b2
. . .
web
server bj
id-a1
id-b1
id-b2
id-a2
id-c1
id-c2
id-b1
id-b2
id-n2
id-n1
.
.
.
.
.
.
User
id
query
manager
proxy
URLb
URL
(redirect)
•
Ideally,
server-initiated
stages obviate most
browser-directed
stages, but
assumption that name assigning authority predicts final server is now shaky
•
Architecture must depend on many systems, messages, points of failure