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plugin/cache: allow cache TTLs above default 3600s (#8134)

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* plugin/cache: allow cache TTLs above default 3600s

This change allows the cache plugin to honor configured maximum TTL values above the default 3600s limit. Default behavior remains unchanged
This PR fixes 7846

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Keep MinimalTTL

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

---------

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
This commit is contained in:
Yong Tang
2026-06-05 21:48:26 -07:00
committed by GitHub
parent b49fe2d469
commit 3342b414e3
5 changed files with 32 additions and 4 deletions
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2
core/dnsserver/server_https.go
View File

@@ -236,7 +236,7 @@ func (s *ServerHTTPS) ServeHTTP(w http.ResponseWriter, r *http.Request) {
buf, _ := dw.Msg.Pack()
mt, _ := response.Typify(dw.Msg, time.Now().UTC())
age := dnsutil.MinimalTTL(dw.Msg, mt)
age := dnsutil.MinimalTTLWithMaximum(dw.Msg, mt, dnsutil.MaximumDefaultTTL)
w.Header().Set("Content-Type", doh.MimeType)
w.Header().Set("Cache-Control", fmt.Sprintf("max-age=%d", uint32(age.Seconds())))

2
core/dnsserver/server_https3.go
View File

@@ -216,7 +216,7 @@ func (s *ServerHTTPS3) ServeHTTP(w http.ResponseWriter, r *http.Request) {
buf, _ := dw.Msg.Pack()
mt, _ := response.Typify(dw.Msg, time.Now().UTC())
age := dnsutil.MinimalTTL(dw.Msg, mt)
age := dnsutil.MinimalTTLWithMaximum(dw.Msg, mt, dnsutil.MaximumDefaultTTL)
w.Header().Set("Content-Type", doh.MimeType)
w.Header().Set("Cache-Control", fmt.Sprintf("max-age=%d", uint32(age.Seconds())))