[dns-operations] Caching of wildcards

[Florian Weimer]

* Jeff Chan:

> If a zone has wildcards:
>
> *.foo.com
>
> does the nameserver cache grow with each different query:
>
> a.foo.com
> b.foo.com
> c.foo.com
>
> or not?

Each record is stored separately.  There might be some sharing of name
suffixes, but it won't result in huge savings.

DNSSEC provides data for more efficient caching, but to my knowledge, no
one implements that (the standard suggests not to do this, too).


-- 
Florian Weimer                <fweimer at bfk.de>
BFK edv-consulting GmbH       http://www.bfk.de/
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