plugin/cache: don't update freq is prefetch isn't used. (#1144)

Small optimization.
This commit is contained in:
Miek Gieben 2017-10-13 17:22:08 +02:00 committed by GitHub
parent 8ed730e1cb
commit c7ff44fb3a

View file

@ -34,7 +34,9 @@ func (c *Cache) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg)
resp, _ = state.Scrub(resp)
w.WriteMsg(resp)
if c.prefetch > 0 {
i.Freq.Update(c.duration, now)
}
pct := 100
if i.origTTL != 0 { // you'll never know