优化

internal/service/media_cache.go

@@ -7,6 +7,7 @@ import (
 	"fmt"
 	"sort"
 	"strings"
+	"time"
 
 	"github.com/truewhile/MeBox/internal/model"
 	"github.com/truewhile/MeBox/internal/repository"
@@ -70,11 +71,60 @@ func (s *MediaService) seriesCardsCacheKey(libraryID string, visibility MediaVis
 
 func (s *MediaService) mediaCacheTTLSeconds() int {
 	if s == nil || s.cfg == nil || s.cfg.Cache.MediaTTLSeconds < 1 {
-		return 15
+		return 90
 	}
 	return s.cfg.Cache.MediaTTLSeconds
 }
 
+// mediaObjectTTL 对象缓存与字节缓存同 TTL，失效同走 invalidateMediaCache
+// 的 DeletePrefix("media:")（对象存储一并清除）。
+func (s *MediaService) mediaObjectTTL() time.Duration {
+	return time.Duration(s.mediaCacheTTLSeconds()) * time.Second
+}
+
+func hashObjectCacheKey(parts []string) string {
+	sum := sha1.Sum([]byte(strings.Join(parts, "|")))
+	return hex.EncodeToString(sum[:])
+}
+
+// mediaGroupedRowsCacheKey 版本分组源行（已挂库元数据）的对象缓存。
+func (s *MediaService) mediaGroupedRowsCacheKey(libraryID string, libraryIDs []string, filter repository.MediaQueryFilter) string {
+	libs := append([]string(nil), libraryIDs...)
+	sort.Strings(libs)
+	allowed := append([]string(nil), filter.AllowedLibraryIDs...)
+	hidden := append([]string(nil), filter.HiddenLibraryIDs...)
+	sort.Strings(allowed)
+	sort.Strings(hidden)
+	return "media:obj:grouped-rows:" + hashObjectCacheKey([]string{
+		libraryID,
+		strings.Join(libs, ","),
+		fmt.Sprintf("%t", filter.IncludeNSFW),
+		strings.Join(allowed, ","),
+		strings.Join(hidden, ","),
+	})
+}
+
+// libraryRowsCacheKey 整库可见行 + 预计算剧集索引的对象缓存（剧集卡片/剧集
+// 列表共用一次 SQL 加载与一次 key 解析）。
+func (s *MediaService) libraryRowsCacheKey(libraryID string, visibility MediaVisibility) string {
+	allowed := append([]string(nil), visibility.AllowedLibraryIDs...)
+	hidden := append([]string(nil), visibility.HiddenLibraryIDs...)
+	sort.Strings(allowed)
+	sort.Strings(hidden)
+	return "media:obj:library-rows:" + hashObjectCacheKey([]string{
+		libraryID,
+		fmt.Sprintf("%t", visibility.IncludeNSFW),
+		strings.Join(allowed, ","),
+		strings.Join(hidden, ","),
+	})
+}
+
+// libraryCardsObjectKey 系列卡片结果的对象缓存（与 seriesCardsCacheKey 同维度，
+// 换独立前缀避免与字节缓存 key 冲突）。
+func (s *MediaService) libraryCardsObjectKey(libraryID string, visibility MediaVisibility) string {
+	return s.seriesCardsCacheKey(libraryID, visibility) + ":obj"
+}
+
 func (s *MediaService) invalidateMediaCache(ctx context.Context) {
 	if s != nil && s.cache != nil {
 		s.cache.DeletePrefix(ctx, "media:")