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plugin/cache: fix negative cache masking cases (#3744)

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* fix negative cache masking cases

Signed-off-by: Chris O'Haver <cohaver@infoblox.com>

* remove unecessary param

Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
This commit is contained in:
Chris O'Haver
2020-03-20 05:05:09 -04:00
committed by GitHub
parent d18b48e36c
commit 40c7b9174b
3 changed files with 107 additions and 3 deletions
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4
plugin/cache/cache.go vendored
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@@ -210,6 +210,10 @@ func (w *ResponseWriter) set(m *dns.Msg, key uint64, mt response.Type, duration
case response.NoError, response.Delegation:
i := newItem(m, w.now(), duration)
w.pcache.Add(key, i)
// when pre-fetching, remove the negative cache entry if it exists
if w.prefetch {
w.ncache.Remove(key)
}
case response.NameError, response.NoData, response.ServerError:
i := newItem(m, w.now(), duration)