Separate DNSSEC queries from normal queries in the cache (#322)

* Separate DNSSEC queries from normal queries in the cache * Update key generation for redis too
folbricht · Aug 23, 2023 · 430b532 · 430b532
1 parent 2be3fad
commit 430b532
Show file tree

Hide file tree

Showing 2 changed files with 5 additions and 0 deletions.
diff --git a/cache-redis.go b/cache-redis.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	"encoding/json"
 	"errors"
+	"fmt"
 	"strings"
 	"time"
 
@@ -125,6 +126,8 @@ func (b *redisBackend) keyFromQuery(q *dns.Msg) string {
 
 	edns0 := q.IsEdns0()
 	if edns0 != nil {
+		key.WriteString(fmt.Sprintf("%t", edns0.Do()))
+		key.WriteByte(':')
 		// See if we have a subnet option
 		for _, opt := range edns0.Option {
 			if subnet, ok := opt.(*dns.EDNS0_SUBNET); ok {

diff --git a/lru-cache.go b/lru-cache.go
@@ -23,6 +23,7 @@ type cacheItem struct {
 type lruKey struct {
 	Question dns.Question
 	Net      string
+	Do       bool
 }
 
 type cacheAnswer struct {
@@ -210,6 +211,7 @@ func lruKeyFromQuery(q *dns.Msg) lruKey {
 
 	edns0 := q.IsEdns0()
 	if edns0 != nil {
+		key.Do = edns0.Do()
 		// See if we have a subnet option
 		for _, opt := range edns0.Option {
 			if subnet, ok := opt.(*dns.EDNS0_SUBNET); ok {