Re: [DNSOP] Minimum viable ANAME
Paul Vixie <paul@redbarn.org> Mon, 05 November 2018 17:05 UTC
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Date: Mon, 05 Nov 2018 09:05:12 -0800
From: Paul Vixie <paul@redbarn.org>
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References: <20180919201401.8E0C220051382A@ary.qy> <08C8A740-D09B-4577-AF2A-79225EDB526B@dotat.at> <20180920061343.GA754@jurassic> <E944887D-51ED-41A0-AC5A-3076743620D8@isoc.org> <acef1f69-8e4f-52cc-dca5-3ada9446e0ee@bellis.me.uk> <5BDE34E3.5030602@redbarn.org> <a149f8ba-7350-327f-ab13-8c6eeb76f2f5@bellis.me.uk> <a85e1f2e-4feb-3f9e-fb8c-62214de98fd2@bellis.me.uk> <5BDEA757.7040208@redbarn.org> <C536FA41-4E24-4552-9139-8AB9B741E009@isc.org> <5BDFB3D0.3030508@redbarn.org> <1C744CCB-EC8F-464B-85F9-4D61C85EE640@isc.org>
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Subject: Re: [DNSOP] Minimum viable ANAME
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Mark Andrews wrote: ... >> if the stub who asked the SRV question does not receive the >> addresses it needs in additional data, it will query for them. that >> will put those addresses in cache, so that on subsequent same-SRV >> questions, it will be present. > > And that requires 2 RTT’s from the client which, despite being only a > few ms normally, has been enough for the HTTP folks to refuses to > deploy anything other than CNAME for ~2 decades now. i don't think we've made it clear to them that this only happens once. > >> if the SRV is never fetched again, then there's no win to be had. > > The win is loosing the extra RTT from the stub to the recursive > server. i know that. but the second RTT stub-rdns only happens once per unique SRV or AAAA/A. after they are both cached, they are returned in a single RTT. > And then we get back to the complaints from the HTTP side saying the > SRV takes longer than CNAME, which is valid for the first lookup if > you don’t fetch the additional records before returning. i don't think they are objecting to something that only happens on the first time a unique SRV or AAAA/A is needed. someone should explain to them that we built this with the expectation that popular data would be fast, and unpopular data wouldn't make a difference in the long run. -- P Vixie
- [DNSOP] Minimum viable ANAME Tony Finch
- Re: [DNSOP] Minimum viable ANAME Anthony Eden
- Re: [DNSOP] Minimum viable ANAME Tony Finch
- Re: [DNSOP] Minimum viable ANAME Paul Vixie
- Re: [DNSOP] Minimum viable ANAME Paul Wouters
- Re: [DNSOP] Minimum viable ANAME Tony Finch
- Re: [DNSOP] Minimum viable ANAME John Levine
- Re: [DNSOP] Minimum viable ANAME Tony Finch
- Re: [DNSOP] Minimum viable ANAME Paul Wouters
- Re: [DNSOP] Minimum viable ANAME Mukund Sivaraman
- Re: [DNSOP] Minimum viable ANAME Tony Finch
- Re: [DNSOP] Minimum viable ANAME Tony Finch
- Re: [DNSOP] Minimum viable ANAME 神明達哉
- Re: [DNSOP] Minimum viable ANAME Tony Finch
- Re: [DNSOP] Minimum viable ANAME Dan York
- Re: [DNSOP] Minimum viable ANAME Matthew Pounsett
- Re: [DNSOP] Minimum viable ANAME 神明達哉
- Re: [DNSOP] Minimum viable ANAME JW
- Re: [DNSOP] Minimum viable ANAME Ray Bellis
- Re: [DNSOP] Minimum viable ANAME Havard Eidnes
- Re: [DNSOP] Minimum viable ANAME Tony Finch
- Re: [DNSOP] Minimum viable ANAME Havard Eidnes
- Re: [DNSOP] Minimum viable ANAME Tim Wicinski
- Re: [DNSOP] Minimum viable ANAME Tony Finch
- Re: [DNSOP] Minimum viable ANAME Havard Eidnes
- Re: [DNSOP] Minimum viable ANAME Ray Bellis
- Re: [DNSOP] Minimum viable ANAME Erik Nygren
- Re: [DNSOP] Minimum viable ANAME Paul Vixie
- Re: [DNSOP] Minimum viable ANAME Ray Bellis
- Re: [DNSOP] Minimum viable ANAME Ray Bellis
- Re: [DNSOP] Minimum viable ANAME Paul Vixie
- Re: [DNSOP] Minimum viable ANAME Mark Andrews
- Re: [DNSOP] Minimum viable ANAME Paul Vixie
- Re: [DNSOP] Minimum viable ANAME Mark Andrews
- Re: [DNSOP] Minimum viable ANAME Brian Dickson
- Re: [DNSOP] Minimum viable ANAME Ray Bellis
- Re: [DNSOP] Minimum viable ANAME Tim Wicinski
- Re: [DNSOP] Minimum viable ANAME Paul Vixie
- Re: [DNSOP] Minimum viable ANAME Ben Schwartz
- Re: [DNSOP] Minimum viable ANAME Matthijs Mekking
- Re: [DNSOP] Minimum viable ANAME Ray Bellis
- Re: [DNSOP] Minimum viable ANAME Tim Wicinski
- Re: [DNSOP] Minimum viable ANAME Ray Bellis
- Re: [DNSOP] Minimum viable ANAME Matthijs Mekking
- Re: [DNSOP] Minimum viable ANAME Ray Bellis
- Re: [DNSOP] Minimum viable ANAME Matthijs Mekking
- Re: [DNSOP] Minimum viable ANAME Mark Andrews
- Re: [DNSOP] Minimum viable ANAME Mark Andrews
- Re: [DNSOP] Minimum viable ANAME Ben Schwartz
- Re: [DNSOP] Minimum viable ANAME Mark Andrews
- [DNSOP] ALTSRV Masataka Ohta
- Re: [DNSOP] Minimum viable ANAME Ben Schwartz
- Re: [DNSOP] Minimum viable ANAME Mark Andrews
- Re: [DNSOP] Minimum viable ANAME Olli Vanhoja
- Re: [DNSOP] Minimum viable ANAME tjw ietf
- Re: [DNSOP] Minimum viable ANAME Dan York
- Re: [DNSOP] Minimum viable ANAME Tony Finch
- Re: [DNSOP] Minimum viable ANAME Matthijs Mekking
- Re: [DNSOP] Minimum viable ANAME Matthijs Mekking
- Re: [DNSOP] Minimum viable ANAME Matthijs Mekking
- Re: [DNSOP] Minimum viable ANAME Tony Finch
- Re: [DNSOP] Minimum viable ANAME Tony Finch
- Re: [DNSOP] Minimum viable ANAME Brian Dickson
- Re: [DNSOP] Minimum viable ANAME Matthijs Mekking
- Re: [DNSOP] Minimum viable ANAME Vladimír Čunát
- Re: [DNSOP] Minimum viable ANAME Olli Vanhoja
- Re: [DNSOP] Minimum viable ANAME Vladimír Čunát
- Re: [DNSOP] Minimum viable ANAME Brian Dickson
- Re: [DNSOP] Minimum viable ANAME Olli Vanhoja
- Re: [DNSOP] Minimum viable ANAME Brian Dickson
- Re: [DNSOP] Minimum viable ANAME Olli Vanhoja
- Re: [DNSOP] Minimum viable ANAME Tony Finch
- Re: [DNSOP] Minimum viable ANAME Dan York
- Re: [DNSOP] Minimum viable ANAME Benno Overeinder