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Diffstat (limited to 'usr.sbin/nscd/nscd.conf.5')
| -rw-r--r-- | usr.sbin/nscd/nscd.conf.5 | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/usr.sbin/nscd/nscd.conf.5 b/usr.sbin/nscd/nscd.conf.5 index b5700a4..1585203 100644 --- a/usr.sbin/nscd/nscd.conf.5 +++ b/usr.sbin/nscd/nscd.conf.5 @@ -102,6 +102,17 @@ The same as the positive-policy, but this one is applied to the negative elements of the given .Ar cachename . The default policy is fifo. +.It Va negative-confidence-threshold Oo Ar cachename Oc Op Ar value +The number of times a query must have failed before the cache accepts +that the element can not be found. +At the default value of 1 each negative query result is cached and +immediately returned from the cache on further queries. +Higher numbers cause queries to be retried at the configured data +sources the given number of times, before the negative result is +returned from the cache on further queries. +This allows to probe for the existence of an entry, and then to create +it if it did not exist, without the negative probe result preventing +access to the new entry for the duration of the negative TTL. .It Va suggested-size Oo Ar cachename Oc Op Ar value This is the internal hash table size. The value should be a prime number for optimum performance. |
