On Feb 19, 2006, at 10:14 AM, Tony Bowden wrote:
So, it presumably is an issue with the Library of Congress server.
Is there some sort of automatic throttling there? Or is there
likely to
be some sort of option that I should be setting, but not?
Yeah, I could well imagine there to be throttling in place. I believe
that Mike Taylor (author of Net::Z3950) may know details of the LoC
server, so posting on the net-z3950 might still help.
If you are just after bibliographic data you may want to try the SRU
server at the LoC which lets you grab various metadata flavors as XML
via HTTP. It may have similar throttling though. For an example here
is a query for an ISBN 0-486-25778-9:
[get DublinCore]
http://z3950.loc.gov:7090/voyager?
query=bath.isbn=0486257789&startRecord=1&maximumRecords=1&recordSchema=d
c&version=1.1&operation=searchRetrieve
[get MARCXML]
http://z3950.loc.gov:7090/voyager?
query=bath.isbn=0486257789&startRecord=1&maximumRecords=1&recordSchema=m
arcxml&version=1.1&operation=searchRetrieve
[get MODS]
http://z3950.loc.gov:7090/voyager?
query=bath.isbn=0486257789&startRecord=1&maximumRecords=1&recordSchema=m
ods&version=1.1&operation=searchRetrieve
If you find out anything and have the time please post your findings
here for the rest of us :-)
//Ed
