Hi Scott， In the file msgreply.h there is a marco definition below:
/** calculate the prefetch TTL as 90% of original. Calculation * without numerical overflow (uin32_t) */ #define PREFETCH_TTL_CALC(ttl) ((ttl) - (ttl)/10) If you only want to change the prefetch calculation, modify the marco above will work. Regards, Luo Ce -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Scott A. Johnson Sent: Wednesday, December 07, 2011 2:09 PM To: [email protected] Subject: [Unbound-users] Prefetch My understanding of setting prefetch to "yes" in unbound.conf will cause unbound, after replying with the answer to a quarry, to re-fetch the requested record if the TTL is 10% or lower of the record's normal TTL so as to be ready for the next request for the same record. Is this how the prefetch setting is supposed to work? If so, I now have another question..... where is this 10% calculation in the code? I looked through unbound.c and a couple other files in the SVN repository but couldn't find the code. I want to make a few changes to the calculation and recompile for my system. Any pointers on where I can find this (calculation in the) code? Thanks! Scott -- Scott A. Johnson [email protected] _______________________________________________ Unbound-users mailing list [email protected] http://unbound.nlnetlabs.nl/mailman/listinfo/unbound-users _______________________________________________ Unbound-users mailing list [email protected] http://unbound.nlnetlabs.nl/mailman/listinfo/unbound-users
