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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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3
plugin/etcd/handler.go
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@@ -84,10 +84,11 @@ func (e *Etcd) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (
m := new(dns.Msg)
m.SetReply(r)
m.Authoritative, m.RecursionAvailable, m.Compress = true, true, true
m.Authoritative, m.RecursionAvailable = true, true
m.Answer = append(m.Answer, records...)
m.Extra = append(m.Extra, extra...)
// TODO(miek): get rid of this by not adding dups in the first place, dnsutil.Append()?
m = dnsutil.Dedup(m)
state.SizeAndDo(m)
m, _ = state.Scrub(m)