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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/forward/forward.go
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@@ -136,7 +136,6 @@ func (f *Forward) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg
return 0, nil
}
ret.Compress = true
// When using force_tcp the upstream can send a message that is too big for
// the udp buffer, hence we need to truncate the message to at least make it
// fit the udp buffer.