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<m...@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
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