Re: Dynamically Reducing TTL of few selected ResourceRecords
OK well it helps with AD nameservers set to forward to some other nameservers for a domain, but I can't say why. Sent from my Verizon Wireless BlackBerry -Original Message- From: Barry Margolin Sender: bind-users-bounces+novosirj=umdnj@lists.isc.org Date: Sun, 30 Sep 2012 21:14:25 To: Subject: Re: Dynamically Reducing TTL of few selected ResourceRecords In article , novos...@umdnj.edu wrote: > A secret a co-worker taught me is to dig ANY on a record. Chances are most > queries are A queries only. If you have HINFO records or anything else, it > will not use the cached data. I don't actually know for sure that that works > on a removed entry though. That's not correct. If you ask a caching server for ANY records, it will just return the types that happen to be in its cache. -- Barry Margolin Arlington, MA ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
Re: Dynamically Reducing TTL of few selected ResourceRecords
In article , novos...@umdnj.edu wrote: > A secret a co-worker taught me is to dig ANY on a record. Chances are most > queries are A queries only. If you have HINFO records or anything else, it > will not use the cached data. I don't actually know for sure that that works > on a removed entry though. That's not correct. If you ask a caching server for ANY records, it will just return the types that happen to be in its cache. -- Barry Margolin Arlington, MA ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
Re: Dynamically Reducing TTL of few selected ResourceRecords
A secret a co-worker taught me is to dig ANY on a record. Chances are most queries are A queries only. If you have HINFO records or anything else, it will not use the cached data. I don't actually know for sure that that works on a removed entry though. Sent from my Verizon Wireless BlackBerry -Original Message- From: blrmaani Sender: bind-users-bounces+novosirj=umdnj@lists.isc.org Date: Sun, 30 Sep 2012 17:33:45 To: Subject: Dynamically Reducing TTL of few selected ResourceRecords Our development team complains about waiting for an hour for the deleted resource records to disappear from recursive resolver cache. I thought of changing the $TTL value to 1 for that zone but realize that its not efficient. Are there any BIND specific options to support this? I know I can have a cron to flush cache of selected records, but a BIND option to support this would be nice.. Thanks Blr ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
Re: Dynamically Reducing TTL of few selected ResourceRecords
In article , blrmaani wrote: > Our development team complains about waiting for an hour for the deleted > resource records to disappear from recursive resolver cache. > > I thought of changing the $TTL value to 1 for that zone but realize that its > not efficient. > > Are there any BIND specific options to support this? I know I can have a cron > to flush cache of selected records, but a BIND option to support this would > be nice.. Each record can have an explicit TTL, e.g. www 300 IN A 1.2.3.4 sets the TTL of the www record to 300 seconds. $TTL is just the default for records with no explicit TTL (which in most zone files is all of them). -- Barry Margolin Arlington, MA ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
Dynamically Reducing TTL of few selected ResourceRecords
Our development team complains about waiting for an hour for the deleted resource records to disappear from recursive resolver cache. I thought of changing the $TTL value to 1 for that zone but realize that its not efficient. Are there any BIND specific options to support this? I know I can have a cron to flush cache of selected records, but a BIND option to support this would be nice.. Thanks Blr ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
