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Do Compress only when need in request.Scrub (#1760)

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* Remove Compress by default

Set Compress = true in Scrub only when the message doesn not fit the
advertized buffer. Doing compression is expensive, so try to avoid it.

Master vs this branch
pkg: github.com/coredns/coredns/plugin/cache
BenchmarkCacheResponse-2   	   50000	     24774 ns/op

pkg: github.com/coredns/coredns/plugin/cache
BenchmarkCacheResponse-2   	  100000	     21960 ns/op

* and make it compile
This commit is contained in:
Miek Gieben
2018-05-01 21:04:06 +01:00
committed by GitHub
parent c48531bb35
commit 5735292406
17 changed files with 27 additions and 23 deletions
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plugin/cache/item.go vendored
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@@ -61,7 +61,6 @@ func (i *item) toMsg(m *dns.Msg, now time.Time) *dns.Msg {
m1.AuthenticatedData = i.AuthenticatedData
m1.RecursionAvailable = i.RecursionAvailable
m1.Rcode = i.Rcode
m1.Compress = true
m1.Answer = make([]dns.RR, len(i.Answer))
m1.Ns = make([]dns.RR, len(i.Ns))