Commit 2ceb4b6a authored by Evan Hunt's avatar Evan Hunt Committed by Matthijs Mekking
Browse files

improve ARM text about cache DB statistics

parent 98b460e6
......@@ -15227,15 +15227,29 @@ HOST-127.EXAMPLE. MX 0 .
</entry>
<entry colname="2">
<para>
The number of RRsets per RR type and nonexistent
names stored in the cache database.
If the exclamation mark (!) is printed for a RR
type, it means that particular type of RRset is
known to be nonexistent (this is also known as
"NXRRSET"). If a hash mark (#) is present then
the RRset is stale. If a tilde mark (~) is
present, the RRset is marked for garbage
collection. Maintained per view.
Statistics counters related to cache contents;
maintained per view.
</para>
<para>
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.
</para>
<para>
If an RR type name is preceded by an exclamation
mark (!), 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").
If an RR type name is preceded by a hash mark (#), it
represents the number of RRsets for this type that are
present in the cache but whose TTLs have expired; these
RRsets may only be used if stale answers are enabled.
If an RR type name is preceded by a tilde (~), it
represents the number of RRsets for this type that are
present in the cache database but are marked for garbage
collection; these RRsets cannot be used.
</para>
</entry>
</row>
......
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