[gtld-tech] Svelte CZDS zone files?

[John McCormac]

On 12/09/2022 21:47, Jothan Frakes via gtld-tech wrote:
> diffs/deltas might also be a nice thing as well to slim up the bandwidth 
> / storage if we're operating santa's list amendment
> 

Think that deltas/diffs were a suggestion on the original CZDS working 
group. It is a very efficient method but would add to the time taken to 
produce the files. Some of the new gTLD zones have very little movenment 
in a month.

> On Mon, Sep 12, 2022 at 1:00 PM Viktor Dukhovni via gtld-tech 
> <gtld-tech at icann.org <mailto:gtld-tech at icann.org>> wrote:
> 
>     It occurs to me that most CZDS users are interested primarily in the
>     collection of "ordinary" records present in the gTLD zone files, and
>     have no intention to e.g. operate secondary servers based on the
>     complete zone data.
> 
>     In particular, the RRSIG and NSEC/NSEC3 records which can take up a
>     significant (perhaps dominant) fraction of the zone file size, may
>     be of little interest to most users.
> 
>     I'd like to propose that ICANN make available a version of each gTLDs
>     zone file that elides the *derived* RRSIG, NSEC and NSEC3 records.
>     Doing this can save significant tranmission costs on the ICANN size, and
>     storage/processing costs on the CZDS user side.
> 
>     If some users want the zone files, RRSIGs and all, those can continue to
>     be available.
> 
>     [ Please DO NOT elide "DS" records, these are not "derived" data, signal
>        which delations are signed, and typically do not take up nearly
>     as much
>        space as RRSIGs. ]

It would make the files a lot easier to process and would reduce the 
bandwidth requirements for the CZDS. Currently, the daily download of 
zones is around 7GB. Deltas would considerably reduce that download.

Regards...jmcc
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