!AAAA in statistics

[Petr Špaček]

Allow me to quote from BIND documentation here:

https://bind9.readthedocs.io/en/latest/reference.html#bind-9-statistics

> Cache DB RRsets
> 
>     Statistics counters related to cache contents, maintained per view.
> 
>     The “NXDOMAIN” counter is the number of names that have been cached as nonexistent. Counters named for RR types indicate the number of active RRsets for each type in the cache database.
> 
>     If an RR type name is preceded by an exclamation point (!), it represents the number of records in the cache which indicate that the type does not exist for a particular name; this is also known as “NXRRSET”.

There is more types like #RRtype and ~RRtype, please see docs to learn more.

Petr Špaček
Internet Systems Consortium



On 15. 08. 24 14:30, Mark Andrews wrote:
> Negative cache entries.
> -- Mark Andrews
>> On 15 Aug 2024, at 22:10, Marco Moock<mm at dorfdsl.de>  wrote:
>>
>> Hello!
>>
>> named.stats includes that:
>>
>> [...]
>> ++ Cache DB RRsets ++
>> [View: default]
>>                 3184 A
>>                 1059 NS
>>                  108 CNAME
>>                    8 SOA
>>                    6 PTR
>>                    1 TXT
>>                 2739 AAAA
>>                   75 DS
>>                  378 RRSIG
>>                    6 NSEC
>>                   21 DNSKEY
>>                    6 HTTPS
>>                   12 !AAAA
>>                   10 !DS
>>                    4 !HTTPS
>>                    6 NXDOMAIN
>> [View: _bind (Cache: _bind)]
>>
>> What do the lines with the ! mean?

-- 
Petr Špaček