Implement better artwork cache keys

core/artwork/image_cache.go

@@ -21,12 +21,9 @@ type cacheKey struct {
 
 func (k *cacheKey) Key() string {
 	return fmt.Sprintf(
-		"%s.%d.%d.%d.%t",
+		"%s.%d",
-		k.artID.ID,
+		k.artID,
 		k.lastUpdate.UnixMilli(),
-		k.size,
-		conf.Server.CoverJpegQuality,
-		conf.Server.EnableMediaFileCoverArt,
 	)
 }
 

core/artwork/reader_album.go

@@ -2,6 +2,8 @@ package artwork
 
 import (
 	"context"
+	"crypto/md5"
+	"fmt"
 	"io"
 	"strings"
 	"time"
@@ -34,6 +36,18 @@ func newAlbumArtworkReader(ctx context.Context, artwork *artwork, artID model.Ar
 	return a, nil
 }
 
+func (a *albumArtworkReader) Key() string {
+	var hash [16]byte
+	if conf.Server.EnableExternalServices {
+		hash = md5.Sum([]byte(conf.Server.Agents + conf.Server.CoverArtPriority))
+	}
+	return fmt.Sprintf(
+		"%s.%x.%t",
+		a.cacheKey.Key(),
+		hash,
+		conf.Server.EnableExternalServices,
+	)
+}
 func (a *albumArtworkReader) LastUpdated() time.Time {
 	return a.album.UpdatedAt
 }

core/artwork/reader_artist.go

@@ -62,13 +62,12 @@ func newArtistReader(ctx context.Context, artwork *artwork, artID model.ArtworkI
 }
 
 func (a *artistReader) Key() string {
-	agentsHash := md5.Sum([]byte(conf.Server.Agents + conf.Server.Spotify.ID))
+	hash := md5.Sum([]byte(conf.Server.Agents + conf.Server.Spotify.ID))
 	return fmt.Sprintf(
-		"%s.%d.%d.%x",
+		"%s.%x.%t",
-		a.artID,
+		a.cacheKey.Key(),
-		a.lastUpdate.UnixMilli(),
+		hash,
-		a.size,
+		conf.Server.EnableExternalServices,
-		agentsHash,
 	)
 }
 

core/artwork/reader_mediafile.go

@@ -2,9 +2,11 @@ package artwork
 
 import (
 	"context"
+	"fmt"
 	"io"
 	"time"
 
+	"github.com/navidrome/navidrome/conf"
 	"github.com/navidrome/navidrome/model"
 )
 
@@ -38,6 +40,13 @@ func newMediafileArtworkReader(ctx context.Context, artwork *artwork, artID mode
 	return a, nil
 }
 
+func (a *mediafileArtworkReader) Key() string {
+	return fmt.Sprintf(
+		"%s.%t",
+		a.cacheKey.Key(),
+		conf.Server.EnableMediaFileCoverArt,
+	)
+}
 func (a *mediafileArtworkReader) LastUpdated() time.Time {
 	return a.lastUpdate
 }

core/artwork/reader_resized.go

@@ -38,6 +38,15 @@ func resizedFromOriginal(ctx context.Context, a *artwork, artID model.ArtworkID,
 	return r, nil
 }
 
+func (a *resizedArtworkReader) Key() string {
+	return fmt.Sprintf(
+		"%s.%d.%d",
+		a.cacheKey.Key(),
+		a.size,
+		conf.Server.CoverJpegQuality,
+	)
+}
+
 func (a *resizedArtworkReader) LastUpdated() time.Time {
 	return a.lastUpdate
 }