[squid-users] Squid 'bursts' of DNS queries ! is the internal DNS cache working ??? (SAMPLE included)

From: Pedro Ribeiro <pribeiro@dont-contact.us>
Date: Fri, 21 Sep 2001 19:21:13 +0100

Has anyone snooped the logs of the dns server that squid uses ?. My squid
seems to 'ignore' the internal DNS cache and BURSTS series of duplicate
queries to the DNS server, i'm I missing something ??

The problem seems to be that while a DNS query is pending (without answer),
squid make duplicate queries if resolution form the same address is needed
...

Best Regards!

Squid2.4stable2 running in Linux 2.2.x / SMP / i686 with internal DNS
querier enabled.

Sample:
...
21-Sep-2001 19:19:12.250 queries: info:
XX+/193.137.220.3/www.mtnsms.com/A/IN
21-Sep-2001 19:19:12.251 queries: info:
XX+/193.137.220.3/www.mtnsms.com/A/IN
21-Sep-2001 19:19:17.759 queries: info:
XX+/193.137.220.3/177.13.4.64.in-addr.arpa/PTR/IN
21-Sep-2001 19:19:17.760 queries: info:
XX+/193.137.220.3/177.13.4.64.in-addr.arpa/PTR/IN
21-Sep-2001 19:19:18.832 queries: info:
XX+/193.137.220.3/www.motorola.com/A/IN
21-Sep-2001 19:19:18.833 queries: info:
XX+/193.137.220.3/www.motorola.com/A/IN
21-Sep-2001 19:19:21.180 queries: info:
XX+/193.137.220.3/a332.g.akamai.net/A/IN
21-Sep-2001 19:19:21.181 queries: info:
XX+/193.137.220.3/a332.g.akamai.net/A/IN
21-Sep-2001 19:19:24.325 queries: info:
XX+/193.137.220.3/dnclassifieds.com/A/IN
21-Sep-2001 19:19:24.326 queries: info:
XX+/193.137.220.3/dnclassifieds.com/A/IN
21-Sep-2001 19:19:28.590 queries: info:
XX+/193.137.220.3/liveupdate.symantec.com/A/IN
21-Sep-2001 19:19:28.590 queries: info:
XX+/193.137.220.3/liveupdate.symantec.com/A/IN
21-Sep-2001 19:19:28.997 queries: info:
XX+/193.137.220.3/liveupdate.symantec.com/A/IN
21-Sep-2001 19:19:28.998 queries: info:
XX+/193.137.220.3/liveupdate.symantec.com/A/IN
21-Sep-2001 19:19:29.039 queries: info:
XX+/193.137.220.3/liveupdate.symantec.com/A/IN
21-Sep-2001 19:19:29.041 queries: info:
XX+/193.137.220.3/liveupdate.symantec.com/A/IN
21-Sep-2001 19:19:29.042 queries: info:
XX+/193.137.220.3/liveupdate.symantec.com/A/IN
21-Sep-2001 19:19:30.596 queries: info:
XX+/193.137.220.3/a1696.g.akamai.net/A/IN
21-Sep-2001 19:19:30.597 queries: info:
XX+/193.137.220.3/a1696.g.akamai.net/A/IN
21-Sep-2001 19:19:30.646 queries: info:
XX+/193.137.220.3/a1696.g.akamai.net/A/IN
21-Sep-2001 19:19:30.648 queries: info:
XX+/193.137.220.3/a1696.g.akamai.net/A/IN
21-Sep-2001 19:19:30.649 queries: info:
XX+/193.137.220.3/a1696.g.akamai.net/A/IN
21-Sep-2001 19:19:33.294 queries: info:
XX+/193.137.220.3/br.finance.yahoo.com/A/IN
21-Sep-2001 19:19:33.294 queries: info:
XX+/193.137.220.3/br.finance.yahoo.com/A/IN
21-Sep-2001 19:19:34.556 queries: info:
XX+/193.137.220.3/br.i1.yimg.com/A/IN
21-Sep-2001 19:19:34.556 queries: info:
XX+/193.137.220.3/br.i1.yimg.com/A/IN
21-Sep-2001 19:19:34.580 queries: info:
XX+/193.137.220.3/br.adserver.yahoo.com/A/IN
21-Sep-2001 19:19:34.581 queries: info:
XX+/193.137.220.3/br.adserver.yahoo.com/A/IN
...

[]-------------------------------------------------------------[]
  Pedro Ribeiro
  Online: http://www.isel.ipl.pt/~pribeiro/
  IRC(PTnet) Nick: PAntMaR
  e-Mail: Spamm: trap@net.ipl.pt
               Personal: pribeiro@net.ipl.pt
               IPLNet/ISELNet Admin: helpdesk@net.ipl.pt
  PGP Key Available in keyservers.
  PGPFP: 6430 6CA7 7642 36D6 718B A884 FDF0 E8F1 30EA 1D19
[]-------------------------------------------------------------[]
Received on Fri Sep 21 2001 - 12:21:20 MDT

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