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| author |  Chris O'Haver <cohaver@infoblox.com>
| 2022-06-17 15:48:57 -0400 |
|---|---|---|
| committer |  GitHub <noreply@github.com>
| 2022-06-17 15:48:57 -0400 |
| commit | dded10420b8a477ebd86cd2ceed9207a42c226cc (patch) | |
| tree | 6b0679260b212428c74a3fbdc6ee3013d6460e0b /plugin/cache/cache.go | |
| parent | d60ce0c8d4fd647e880a118f469e8239d6effc7d (diff) | |
| download | coredns-dded10420b8a477ebd86cd2ceed9207a42c226cc.tar.gz coredns-dded10420b8a477ebd86cd2ceed9207a42c226cc.tar.zst coredns-dded10420b8a477ebd86cd2ceed9207a42c226cc.zip | |
plugin/cache: Add option to adjust SERVFAIL response cache TTL (#5320)
* add servfail cache opt
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
Diffstat (limited to 'plugin/cache/cache.go')
| -rw-r--r-- | plugin/cache/cache.go | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/plugin/cache/cache.go b/plugin/cache/cache.go index fb84fcec0..fc42866ac 100644 --- a/plugin/cache/cache.go +++ b/plugin/cache/cache.go @@ -32,6 +32,7 @@ type Cache struct { pcap int pttl time.Duration minpttl time.Duration + failttl time.Duration // TTL for caching SERVFAIL responses // Prefetch. prefetch int @@ -59,6 +60,7 @@ func New() *Cache { ncache: cache.New(defaultCap), nttl: maxNTTL, minnttl: minNTTL, + failttl: minNTTL, prefetch: 0, duration: 1 * time.Minute, percentage: 10, @@ -158,8 +160,7 @@ func (w *ResponseWriter) WriteMsg(res *dns.Msg) error { if mt == response.NameError || mt == response.NoData { duration = computeTTL(msgTTL, w.minnttl, w.nttl) } else if mt == response.ServerError { - // use default ttl which is 5s - duration = minTTL + duration = w.failttl } else { duration = computeTTL(msgTTL, w.minpttl, w.pttl) } |