Oh, and some interesting questions may include a study of: - How are TTLs changing over time now that so much content is moving to CDNs - What are the recursive resolver effects due to more hyper-giants and CDNs - Study of large scale auth failures in CDN/content providers and the resulting effects on recursive resolvers (system shocks where QPS load may go up 100% - 200% in a few minutes)
Jason On 1/18/13 11:03 AM, "Livingood, Jason" <[email protected]> wrote: >If there is anyone out there interested in doing research into DNS >recursive resolvers and are seeking either (1) access to data (stripped of >PII of course) and/or (2) modest funding support, please let me know >off-list. > >- Jason > > > >On 2/20/12 2:27 PM, "Emiliano Casalicchio" ><[email protected]> wrote: > >>John, >>may be the model described in this paper can be useful for you. >> >> Yakup Koç, Almerima Jamakovic, Bart Gijsen, "A Global Reference Model of >>the DNS" >> >>presented at DNS-EASY 2011. >> >>Here the proceedings: >>http://www.gcsec.org/sites/default/files/files/dnseasy2011_final.pdf >> >>Best >>Emiliano >> >> >> >> >>On 18 Feb 2012, at 02:57, John Levine wrote: >> >>> Are there any models of DNS cache behavior, either analytic or >>> simulations? What I have in mind is something that would help me see >>> whether I should partition a cache among various kinds of traffic, or >>> perhaps limit max TTLs, or experiment with replacement strategies. >>> >>> For that matter, what's the state of DNS modelling in general? >>> >>> I found a paper by Jung et al from 2003 on cache models which starts >>> by asserting that caches are so big that entries only drop out due to >>> TTL expiry, did a lot of analysis and simulation, and concluded that >>> 15 minute TTLs got nearly the same cache benefit of 24 hr TTL. >>> >>> A 2010 paper by Alexiou et al. models the Kaminsky DNS poisoning >>> attack and the port randomizing fix, which is interesting but not what >>> I'm looking for. (They conclude that the attack is real, and the fix >>> works OK.) >>> >>> Anything else I should be looking at? >>> >>> >>> -- >>> Regards, >>> John Levine, [email protected], Primary Perpetrator of "The Internet for >>>Dummies", >>> Please consider the environment before reading this e-mail. >>>http://jl.ly >>> _______________________________________________ >>> DNSOP mailing list >>> [email protected] >>> https://www.ietf.org/mailman/listinfo/dnsop >>> >> >>_______________________________________________ >>DNSOP mailing list >>[email protected] >>https://www.ietf.org/mailman/listinfo/dnsop > >_______________________________________________ >DNSOP mailing list >[email protected] >https://www.ietf.org/mailman/listinfo/dnsop _______________________________________________ DNSOP mailing list [email protected] https://www.ietf.org/mailman/listinfo/dnsop
