인기 캐릭터 번역 조회 개선

시리즈 목록 조회 쿼리 최적화
OriginalAudioDrama 리스트 조회 쿼리 최적화
2026-02-13 15:46:54 +09:00 · 2026-02-13 15:15:31 +09:00 · 2026-02-13 12:10:13 +09:00 · 2026-02-13 10:37:06 +09:00
13 changed files with 885 additions and 472 deletions
--- a/src/main/kotlin/kr/co/vividnext/sodalive/api/home/HomeService.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/api/home/HomeService.kt
@@ -1,7 +1,6 @@
 package kr.co.vividnext.sodalive.api.home

 import kr.co.vividnext.sodalive.audition.AuditionService
-import kr.co.vividnext.sodalive.chat.character.dto.Character
 import kr.co.vividnext.sodalive.chat.character.service.ChatCharacterService
 import kr.co.vividnext.sodalive.chat.character.translate.AiCharacterTranslationRepository
 import kr.co.vividnext.sodalive.content.AudioContentMainItem
@@ -12,9 +11,7 @@ import kr.co.vividnext.sodalive.content.main.GetAudioContentRankingItem
 import kr.co.vividnext.sodalive.content.main.banner.AudioContentBannerService
 import kr.co.vividnext.sodalive.content.series.ContentSeriesService
 import kr.co.vividnext.sodalive.content.series.GetSeriesListResponse
-import kr.co.vividnext.sodalive.content.series.translation.SeriesTranslationRepository
 import kr.co.vividnext.sodalive.content.theme.AudioContentThemeService
-import kr.co.vividnext.sodalive.content.translation.ContentTranslationRepository
 import kr.co.vividnext.sodalive.creator.admin.content.series.SeriesPublishedDaysOfWeek
 import kr.co.vividnext.sodalive.event.GetEventResponse
 import kr.co.vividnext.sodalive.explorer.ExplorerQueryRepository
@@ -50,9 +47,7 @@ class HomeService(
    private val rankingRepository: RankingRepository,
    private val explorerQueryRepository: ExplorerQueryRepository,

-    private val contentTranslationRepository: ContentTranslationRepository,
    private val aiCharacterTranslationRepository: AiCharacterTranslationRepository,
-    private val seriesTranslationRepository: SeriesTranslationRepository,

    private val langContext: LangContext,

@@ -122,8 +117,6 @@ class HomeService(
            isAdult = isAdult
        )

-        val translatedLatestContentList = getTranslatedContentList(contentList = latestContentList)
-
        val eventBannerList = GetEventResponse(
            totalCount = 0,
            eventList = emptyList()
@@ -135,28 +128,23 @@ class HomeService(
            isAdult = isAdult
        )

-        // 오직 보이스온에서만
        val originalAudioDramaList = seriesService.getOriginalAudioDramaList(
            isAdult = isAdult,
-            contentType = contentType,
-            orderByRandom = true
+            contentType = contentType
        )

-        val translatedOriginalAudioDramaList = getTranslatedSeriesList(seriesList = originalAudioDramaList)
-
        val auditionList = auditionService.getInProgressAuditionList(isAdult = isAdult)

        // 요일별 시리즈
-        val dayOfWeekSeriesList = seriesService.getDayOfWeekSeriesList(
+        val translatedDayOfWeekSeriesList = seriesService.getDayOfWeekSeriesList(
            memberId = memberId,
            isAdult = isAdult,
            contentType = contentType,
            dayOfWeek = getDayOfWeekByTimezone(timezone)
        )
-        val translatedDayOfWeekSeriesList = getTranslatedSeriesList(seriesList = dayOfWeekSeriesList)

        // 인기 캐릭터 조회
-        val translatedPopularCharacters = getTranslatedAiCharacterList(aiCharacterList = characterService.getPopularCharacters())
+        val translatedPopularCharacters = characterService.getPopularCharacters(locale = langContext.lang.code)

        val currentDateTime = LocalDateTime.now()
        val startDate = currentDateTime
@@ -177,64 +165,12 @@ class HomeService(
            sort = ContentRankingSortType.REVENUE
        )

-        val contentRankingContentIds = contentRanking.map { it.contentId }
-        val translatedContentRanking = if (contentRankingContentIds.isNotEmpty()) {
-            val translations = contentTranslationRepository
-                .findByContentIdInAndLocale(contentIds = contentRankingContentIds, locale = langContext.lang.code)
-                .associateBy { it.contentId }
-
-            contentRanking.map { item ->
-                val translatedTitle = translations[item.contentId]?.renderedPayload?.title
-                if (translatedTitle.isNullOrBlank()) {
-                    item
-                } else {
-                    item.copy(title = translatedTitle)
-                }
-            }
-        } else {
-            contentRanking
-        }
-
        val recommendChannelList = recommendChannelService.getRecommendChannel(
            memberId = memberId,
            isAdult = isAdult,
            contentType = contentType
        )

-        /**
-         * recommendChannelList의 콘텐츠 번역 데이터 조회
-         *
-         * languageCode != null
-         * contentTranslationRepository를 이용해 번역 콘텐츠를 조회한다. - contentId, locale
-         *
-         * 한 번에 조회하고 contentId를 매핑하여 recommendChannelList의 콘텐츠 title을 번역 데이터로 변경한다
-         */
-        val channelContentIds = recommendChannelList
-            .flatMap { it.contentList }
-            .map { it.contentId }
-            .distinct()
-
-        val translatedRecommendChannelList = if (channelContentIds.isNotEmpty()) {
-            val translations = contentTranslationRepository
-                .findByContentIdInAndLocale(contentIds = channelContentIds, locale = langContext.lang.code)
-                .associateBy { it.contentId }
-
-            recommendChannelList.map { channel ->
-                val translatedContentList = channel.contentList.map { item ->
-                    val translatedTitle = translations[item.contentId]?.renderedPayload?.title
-                    if (translatedTitle.isNullOrBlank()) {
-                        item
-                    } else {
-                        item.copy(title = translatedTitle)
-                    }
-                }
-
-                channel.copy(contentList = translatedContentList)
-            }
-        } else {
-            recommendChannelList
-        }
-
        val freeContentList = getRandomizedContentList(
            memberId = memberId,
            isAdult = isAdult,
@@ -248,8 +184,6 @@ class HomeService(
            isPointAvailableOnly = false
        )

-        val translatedFreeContentList = getTranslatedContentList(contentList = freeContentList)
-
        // 포인트 사용가능 콘텐츠 리스트 - 랜덤으로 가져오기 (DB에서 isPointAvailable 조건 적용)
        val pointAvailableContentList = getRandomizedContentList(
            memberId = memberId,
@@ -260,28 +194,26 @@ class HomeService(
            isPointAvailableOnly = true
        )

-        val translatedPointAvailableContentList = getTranslatedContentList(contentList = pointAvailableContentList)
-
        val excludeContentIds = (
-            translatedLatestContentList.map { it.contentId } +
-                translatedContentRanking.map { it.contentId }
+            latestContentList.map { it.contentId } +
+                contentRanking.map { it.contentId }
            ).distinct()

        return GetHomeResponse(
            liveList = liveList,
            creatorRanking = creatorRanking,
            latestContentThemeList = latestContentThemeList,
-            latestContentList = translatedLatestContentList,
+            latestContentList = latestContentList,
            bannerList = bannerList,
            eventBannerList = eventBannerList,
-            originalAudioDramaList = translatedOriginalAudioDramaList,
+            originalAudioDramaList = originalAudioDramaList,
            auditionList = auditionList,
            dayOfWeekSeriesList = translatedDayOfWeekSeriesList,
            popularCharacters = translatedPopularCharacters,
-            contentRanking = translatedContentRanking,
-            recommendChannelList = translatedRecommendChannelList,
-            freeContentList = translatedFreeContentList,
-            pointAvailableContentList = translatedPointAvailableContentList,
+            contentRanking = contentRanking,
+            recommendChannelList = recommendChannelList,
+            freeContentList = freeContentList,
+            pointAvailableContentList = pointAvailableContentList,
            recommendContentList = getRecommendContentList(
                isAdultContentVisible = isAdultContentVisible,
                contentType = contentType,
@@ -311,15 +243,13 @@ class HomeService(
            listOf(theme)
        }

-        val contentList = contentService.getLatestContentByTheme(
+        return contentService.getLatestContentByTheme(
            memberId = memberId,
            theme = themeList,
            contentType = contentType,
            isFree = false,
            isAdult = isAdult
        )
-
-        return getTranslatedContentList(contentList = contentList)
    }

    fun getDayOfWeekSeriesList(
@@ -331,14 +261,12 @@ class HomeService(
        val memberId = member?.id
        val isAdult = member?.auth != null && isAdultContentVisible

-        val dayOfWeekSeriesList = seriesService.getDayOfWeekSeriesList(
+        return seriesService.getDayOfWeekSeriesList(
            memberId = memberId,
            isAdult = isAdult,
            contentType = contentType,
            dayOfWeek = dayOfWeek
        )
-
-        return getTranslatedSeriesList(seriesList = dayOfWeekSeriesList)
    }

    fun getContentRankingBySort(
@@ -445,7 +373,7 @@ class HomeService(
            }
        }

-        return getTranslatedContentList(contentList = result.take(RECOMMEND_TARGET_SIZE).shuffled())
+        return result.take(RECOMMEND_TARGET_SIZE).shuffled()
    }

    private fun pickByTimeDecay(
@@ -542,114 +470,6 @@ class HomeService(
            }
        }

-        return getTranslatedContentList(contentList = result.take(targetSize).shuffled())
-    }
-
-    /**
-     * 콘텐츠 리스트의 제목을 현재 언어(locale)에 맞춰 일괄 번역한다.
-     *
-     * 처리 절차:
-     * - 입력된 콘텐츠들의 contentId 집합을 만들고, 요청 언어 코드(langContext.lang.code)로
-     *   contentTranslationRepository에서 번역 데이터를 한 번에 조회한다.
-     * - 각 항목에 대해 번역된 제목이 존재하고 비어있지 않으면 title만 번역 값으로 교체한다.
-     * - 번역이 없거나 공백이면 원본 항목을 그대로 반환한다.
-     *
-     * 성능:
-     * - N건의 항목을 1회의 조회로 해결하기 위해 IN 쿼리를 사용한다.
-     *
-     * @param contentList 번역 대상 AudioContentMainItem 목록
-     * @return 제목이 가능한 항목은 번역된 목록(불변 사본), 그 외는 원본 항목 유지
-     */
-    private fun getTranslatedContentList(contentList: List<AudioContentMainItem>): List<AudioContentMainItem> {
-        val contentIds = contentList.map { it.contentId }
-
-        return if (contentIds.isNotEmpty()) {
-            val translations = contentTranslationRepository
-                .findByContentIdInAndLocale(contentIds = contentIds, locale = langContext.lang.code)
-                .associateBy { it.contentId }
-
-            contentList.map { item ->
-                val translatedTitle = translations[item.contentId]?.renderedPayload?.title
-                if (translatedTitle.isNullOrBlank()) {
-                    item
-                } else {
-                    item.copy(title = translatedTitle)
-                }
-            }
-        } else {
-            contentList
-        }
-    }
-
-    /**
-     * 시리즈 리스트의 제목을 현재 언어(locale)에 맞춰 일괄 번역한다.
-     *
-     * 처리 절차:
-     * - 입력된 시리즈들의 seriesId 집합을 만들고, 요청 언어 코드(langContext.lang.code)로
-     *   seriesTranslationRepository에서 번역 데이터를 한 번에 조회한다.
-     * - 각 항목에 대해 번역된 제목이 존재하고 비어있지 않으면 title만 번역 값으로 교체한다.
-     * - 번역이 없거나 공백이면 원본 항목을 그대로 반환한다.
-     *
-     * 성능:
-     * - N건의 항목을 1회의 조회로 해결하기 위해 IN 쿼리를 사용한다.
-     *
-     * @param seriesList 번역 대상 SeriesListItem 목록
-     * @return 제목이 가능한 항목은 번역된 목록(불변 사본), 그 외는 원본 항목 유지
-     */
-    private fun getTranslatedSeriesList(
-        seriesList: List<GetSeriesListResponse.SeriesListItem>
-    ): List<GetSeriesListResponse.SeriesListItem> {
-        val seriesIds = seriesList.map { it.seriesId }
-
-        return if (seriesIds.isNotEmpty()) {
-            val translations = seriesTranslationRepository
-                .findBySeriesIdInAndLocale(seriesIds = seriesIds, locale = langContext.lang.code)
-                .associateBy { it.seriesId }
-
-            seriesList.map { item ->
-                val translatedTitle = translations[item.seriesId]?.renderedPayload?.title
-                if (translatedTitle.isNullOrBlank()) {
-                    item
-                } else {
-                    item.copy(title = translatedTitle)
-                }
-            }
-        } else {
-            seriesList
-        }
-    }
-
-    /**
-     * AI 캐릭터 리스트의 이름/설명을 현재 언어(locale)에 맞춰 일괄 번역한다.
-     *
-     * 처리 절차:
-     * - characterId 목록을 추출하고, 요청 언어 코드로 aiCharacterTranslationRepository에서
-     *   번역 데이터를 한 번에 조회한다.
-     * - 각 캐릭터에 대해 name과 description 모두 번역 값이 존재하고 비어있지 않을 때에만
-     *   해당 필드를 교체한다. 둘 중 하나라도 없으면 원본 캐릭터를 그대로 유지한다.
-     *
-     * @param aiCharacterList 번역 대상 캐릭터 목록
-     * @return 가능한 경우 name/description이 번역된 캐릭터 목록, 그 외는 원본 유지
-     */
-    private fun getTranslatedAiCharacterList(aiCharacterList: List<Character>): List<Character> {
-        val characterIds = aiCharacterList.map { it.characterId }
-
-        return if (characterIds.isNotEmpty()) {
-            val translations = aiCharacterTranslationRepository
-                .findByCharacterIdInAndLocale(characterIds = characterIds, locale = langContext.lang.code)
-                .associateBy { it.characterId }
-
-            aiCharacterList.map { character ->
-                val translatedName = translations[character.characterId]?.renderedPayload?.name
-                val translatedDesc = translations[character.characterId]?.renderedPayload?.description
-                if (translatedName.isNullOrBlank() || translatedDesc.isNullOrBlank()) {
-                    character
-                } else {
-                    character.copy(name = translatedName, description = translatedDesc)
-                }
-            }
-        } else {
-            aiCharacterList
-        }
+        return result.take(targetSize).shuffled()
    }
 }
--- a/src/main/kotlin/kr/co/vividnext/sodalive/chat/character/controller/ChatCharacterController.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/chat/character/controller/ChatCharacterController.kt
@@ -100,7 +100,7 @@ class ChatCharacterController(
        }

        // 인기 캐릭터 조회
-        val popularCharacters = service.getPopularCharacters()
+        val popularCharacters = service.getPopularCharacters(locale = langContext.lang.code)

        // 최근 등록된 캐릭터 리스트 조회
        val newCharacters = service.getRecentCharactersPage(
@@ -138,7 +138,7 @@ class ChatCharacterController(
            CharacterMainResponse(
                banners = banners,
                recentCharacters = translatedRecentCharacters,
-                popularCharacters = getTranslatedAiCharacterList(popularCharacters),
+                popularCharacters = popularCharacters,
                newCharacters = getTranslatedAiCharacterList(newCharacters),
                recommendCharacters = getTranslatedAiCharacterList(recommendCharacters),
                curationSections = curationSections
--- a/src/main/kotlin/kr/co/vividnext/sodalive/chat/character/service/ChatCharacterService.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/chat/character/service/ChatCharacterService.kt
@@ -77,18 +77,23 @@ class ChatCharacterService(
     */
    @Transactional(readOnly = true)
    @Cacheable(
-        cacheNames = ["popularCharacters_24h"],
-        key = "T(kr.co.vividnext.sodalive.chat.character.service.RankingWindowCalculator).now('popular-character').cacheKey"
+        cacheNames = ["popularCharacters_24h_locale"],
+        key = "T(kr.co.vividnext.sodalive.chat.character.service.RankingWindowCalculator)" +
+            ".now('popular-character').cacheKey + '-' + #locale"
    )
-    fun getPopularCharacters(limit: Long = 20): List<Character> {
+    fun getPopularCharacters(locale: String, limit: Long = 20): List<Character> {
        val window = RankingWindowCalculator.now("popular-character")
-        val topIds = popularCharacterQuery.findPopularCharacterIds(window.windowStart, window.nextBoundary, limit)
-        val list = loadCharactersInOrder(topIds)
+        val results = popularCharacterQuery.findPopularCharactersWithTranslation(
+            window.windowStart,
+            window.nextBoundary,
+            limit,
+            locale
+        )

-        val recentSet = if (list.isNotEmpty()) {
+        val recentSet = if (results.isNotEmpty()) {
            imageRepository
                .findCharacterIdsWithRecentImages(
-                    list.map { it.id!! },
+                    results.map { it.id },
                    LocalDateTime.now().minusDays(3)
                )
                .toSet()
@@ -96,11 +101,11 @@ class ChatCharacterService(
            emptySet()
        }

-        return list.map {
+        return results.map {
            Character(
-                characterId = it.id!!,
-                name = it.name,
-                description = it.description,
+                characterId = it.id,
+                name = it.translatedPayload?.name.takeIf { name -> !name.isNullOrBlank() } ?: it.name,
+                description = it.translatedPayload?.description.takeIf { desc -> !desc.isNullOrBlank() } ?: it.description,
                imageUrl = "$imageHost/${it.imagePath ?: "profile/default-profile.png"}",
                new = recentSet.contains(it.id)
            )
--- a/src/main/kotlin/kr/co/vividnext/sodalive/chat/character/service/PopularCharacterQuery.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/chat/character/service/PopularCharacterQuery.kt
@@ -1,7 +1,10 @@
 package kr.co.vividnext.sodalive.chat.character.service

+import com.querydsl.core.types.Projections
 import com.querydsl.jpa.impl.JPAQueryFactory
 import kr.co.vividnext.sodalive.chat.character.QChatCharacter
+import kr.co.vividnext.sodalive.chat.character.translate.AiCharacterTranslationRenderedPayload
+import kr.co.vividnext.sodalive.chat.character.translate.QAiCharacterTranslation
 import kr.co.vividnext.sodalive.chat.room.ParticipantType
 import kr.co.vividnext.sodalive.chat.room.QChatMessage
 import kr.co.vividnext.sodalive.chat.room.QChatParticipant
@@ -51,4 +54,56 @@ class PopularCharacterQuery(
            .limit(limit)
            .fetch()
    }
+
+    data class PopularCharacterQueryResult(
+        val id: Long,
+        val name: String,
+        val description: String,
+        val imagePath: String?,
+        val translatedPayload: AiCharacterTranslationRenderedPayload?
+    )
+
+    fun findPopularCharactersWithTranslation(
+        windowStart: Instant,
+        endExclusive: Instant,
+        limit: Long,
+        locale: String
+    ): List<PopularCharacterQueryResult> {
+        val m = QChatMessage.chatMessage
+        val p = QChatParticipant.chatParticipant
+        val c = QChatCharacter.chatCharacter
+        val t = QAiCharacterTranslation.aiCharacterTranslation
+
+        val start = LocalDateTime.ofInstant(windowStart, ZoneOffset.UTC)
+        val end = LocalDateTime.ofInstant(endExclusive, ZoneOffset.UTC)
+
+        return queryFactory
+            .select(
+                Projections.constructor(
+                    PopularCharacterQueryResult::class.java,
+                    c.id,
+                    c.name,
+                    c.description,
+                    c.imagePath,
+                    t.renderedPayload
+                )
+            )
+            .from(m)
+            .join(p).on(
+                p.chatRoom.id.eq(m.chatRoom.id)
+                    .and(p.participantType.eq(ParticipantType.CHARACTER))
+            )
+            .join(c).on(c.id.eq(p.character.id))
+            .leftJoin(t).on(t.characterId.eq(c.id).and(t.locale.eq(locale)))
+            .where(
+                m.createdAt.goe(start)
+                    .and(m.createdAt.lt(end))
+                    .and(m.isActive.isTrue)
+                    .and(c.isActive.isTrue)
+            )
+            .groupBy(c.id, c.name, c.description, c.imagePath, t.id, t.renderedPayload)
+            .orderBy(m.id.count().desc())
+            .limit(limit)
+            .fetch()
+    }
 }
--- a/src/main/kotlin/kr/co/vividnext/sodalive/content/AudioContentRepository.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/content/AudioContentRepository.kt
@@ -25,6 +25,7 @@ import kr.co.vividnext.sodalive.content.pin.QPinContent.pinContent
 import kr.co.vividnext.sodalive.content.playlist.AudioContentPlaylistContent
 import kr.co.vividnext.sodalive.content.playlist.QAudioContentPlaylistContent
 import kr.co.vividnext.sodalive.content.theme.QAudioContentTheme.audioContentTheme
+import kr.co.vividnext.sodalive.content.translation.QContentTranslation.contentTranslation
 import kr.co.vividnext.sodalive.creator.admin.content.series.QSeries.series
 import kr.co.vividnext.sodalive.creator.admin.content.series.QSeriesContent.seriesContent
 import kr.co.vividnext.sodalive.event.QEvent.event
@@ -188,7 +189,8 @@ interface AudioContentQueryRepository {
        isAdult: Boolean,
        orderByRandom: Boolean = false,
        isPointAvailableOnly: Boolean = false,
-        excludeContentIds: List<Long> = emptyList()
+        excludeContentIds: List<Long> = emptyList(),
+        locale: String? = null
    ): List<AudioContentMainItem>

    fun findContentByCurationId(
@@ -1331,7 +1333,8 @@ class AudioContentQueryRepositoryImpl(
        isAdult: Boolean,
        orderByRandom: Boolean,
        isPointAvailableOnly: Boolean,
-        excludeContentIds: List<Long>
+        excludeContentIds: List<Long>,
+        locale: String?
    ): List<AudioContentMainItem> {
        val blockMemberCondition = if (memberId != null) {
            blockMember.member.id.eq(member.id)
@@ -1382,12 +1385,27 @@ class AudioContentQueryRepositoryImpl(
            where = where.and(audioContent.id.notIn(excludeContentIds))
        }

+        val titleExpression = if (locale != null) {
+            val translatedTitle = Expressions.stringTemplate(
+                "JSON_EXTRACT({0}, '$.title')",
+                contentTranslation.renderedPayload
+            )
+            val coalesceTitle = Expressions.stringTemplate(
+                "COALESCE(NULLIF({0}, ''), {1})",
+                translatedTitle,
+                audioContent.title
+            )
+            coalesceTitle
+        } else {
+            audioContent.title
+        }
+
        var select = queryFactory
            .select(
                QAudioContentMainItem(
                    audioContent.id,
                    member.id,
-                    audioContent.title,
+                    titleExpression,
                    audioContent.coverImage.prepend("/").prepend(imageHost),
                    member.nickname,
                    audioContent.isPointAvailable
@@ -1397,6 +1415,11 @@ class AudioContentQueryRepositoryImpl(
            .innerJoin(audioContent.member, member)
            .innerJoin(audioContent.theme, audioContentTheme)

+        if (locale != null) {
+            select = select.leftJoin(contentTranslation)
+                .on(contentTranslation.contentId.eq(audioContent.id).and(contentTranslation.locale.eq(locale)))
+        }
+
        if (memberId != null) {
            where = where.and(blockMember.id.isNull)
            select = select.leftJoin(blockMember).on(blockMemberCondition)
--- a/src/main/kotlin/kr/co/vividnext/sodalive/content/AudioContentService.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/content/AudioContentService.kt
@@ -1222,7 +1222,7 @@ class AudioContentService(
            isPointAvailableOnly = isPointAvailableOnly
        )

-        val contentList = repository.getLatestContentByTheme(
+        return repository.getLatestContentByTheme(
            memberId = memberId,
            theme = normalizedTheme,
            contentType = contentType,
@@ -1233,26 +1233,9 @@ class AudioContentService(
            isAdult = isAdult,
            orderByRandom = orderByRandom,
            isPointAvailableOnly = isPointAvailableOnly,
-            excludeContentIds = excludeContentIds
+            excludeContentIds = excludeContentIds,
+            locale = langContext.lang.code
        )
-
-        val contentIds = contentList.map { it.contentId }
-        return if (contentIds.isNotEmpty()) {
-            val translations = contentTranslationRepository
-                .findByContentIdInAndLocale(contentIds = contentIds, locale = langContext.lang.code)
-                .associateBy { it.contentId }
-
-            contentList.map { item ->
-                val translatedTitle = translations[item.contentId]?.renderedPayload?.title
-                if (translatedTitle.isNullOrBlank()) {
-                    item
-                } else {
-                    item.copy(title = translatedTitle)
-                }
-            }
-        } else {
-            contentList
-        }
    }

    /**
--- a/src/main/kotlin/kr/co/vividnext/sodalive/content/series/ContentSeriesRepository.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/content/series/ContentSeriesRepository.kt
--- a/src/main/kotlin/kr/co/vividnext/sodalive/content/series/ContentSeriesService.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/content/series/ContentSeriesService.kt
@@ -12,10 +12,8 @@ import kr.co.vividnext.sodalive.content.series.translation.SeriesTranslationPayl
 import kr.co.vividnext.sodalive.content.series.translation.SeriesTranslationRepository
 import kr.co.vividnext.sodalive.content.series.translation.TranslatedSeries
 import kr.co.vividnext.sodalive.content.translation.ContentTranslationRepository
-import kr.co.vividnext.sodalive.creator.admin.content.series.Series
 import kr.co.vividnext.sodalive.creator.admin.content.series.SeriesPublishedDaysOfWeek
 import kr.co.vividnext.sodalive.creator.admin.content.series.SeriesSortType
-import kr.co.vividnext.sodalive.creator.admin.content.series.SeriesState
 import kr.co.vividnext.sodalive.explorer.ExplorerQueryRepository
 import kr.co.vividnext.sodalive.i18n.Lang
 import kr.co.vividnext.sodalive.i18n.LangContext
@@ -26,7 +24,6 @@ import kr.co.vividnext.sodalive.member.block.BlockMemberRepository
 import org.springframework.beans.factory.annotation.Value
 import org.springframework.stereotype.Service
 import org.springframework.transaction.annotation.Transactional
-import java.time.LocalDateTime
 import java.time.ZoneId
 import java.time.format.DateTimeFormatter

@@ -55,12 +52,21 @@ class ContentSeriesService(
    fun getOriginalAudioDramaList(
        isAdult: Boolean,
        contentType: ContentType,
-        orderByRandom: Boolean = false,
        offset: Long = 0,
        limit: Long = 20
    ): List<GetSeriesListResponse.SeriesListItem> {
-        val originalAudioDramaList = repository.getOriginalAudioDramaList(isAdult, contentType, orderByRandom, offset, limit)
-        return getTranslatedSeriesList(seriesToSeriesListItem(originalAudioDramaList, isAdult, contentType))
+        val originalAudioDramaList = repository.getOriginalAudioDramaList(
+            imageHost = coverImageHost,
+            isAdult = isAdult,
+            contentType = contentType,
+            locale = langContext.lang.code,
+            offset = offset,
+            limit = limit
+        )
+
+        return originalAudioDramaList.map { item ->
+            item.copy(publishedDaysOfWeek = publishedDaysOfWeekText(item.rawPublishedDaysOfWeek))
+        }
    }

    fun getGenreList(memberId: Long, isAdult: Boolean, contentType: ContentType): List<GetSeriesGenreListResponse> {
@@ -151,10 +157,11 @@ class ContentSeriesService(
            isAuth = isAuth,
            contentType = contentType,
            isOriginal = isOriginal,
-            isCompleted = isCompleted
+            isCompleted = isCompleted,
+            memberId = member.id
        )

-        val rawItems = repository.getSeriesList(
+        val items = repository.getSeriesListV2(
            imageHost = coverImageHost,
            creatorId = creatorId,
            isAuth = isAuth,
@@ -163,11 +170,14 @@ class ContentSeriesService(
            isCompleted = isCompleted,
            orderByRandom = orderByRandom,
            offset = offset,
-            limit = limit
-        ).filter { !blockMemberRepository.isBlocked(blockedMemberId = member.id!!, memberId = it.member!!.id!!) }
+            limit = limit,
+            locale = langContext.lang.code,
+            memberId = member.id
+        ).map { item ->
+            item.copy(publishedDaysOfWeek = publishedDaysOfWeekText(item.rawPublishedDaysOfWeek))
+        }

-        val items = seriesToSeriesListItem(seriesList = rawItems, isAdult = isAuth, contentType = contentType)
-        return GetSeriesListResponse(totalCount, getTranslatedSeriesList(items))
+        return GetSeriesListResponse(totalCount, items)
    }

    fun getSeriesListByGenre(
@@ -183,20 +193,24 @@ class ContentSeriesService(
        val totalCount = repository.getSeriesByGenreTotalCount(
            genreId = genreId,
            isAuth = isAuth,
-            contentType = contentType
+            contentType = contentType,
+            memberId = member.id
        )

-        val rawItems = repository.getSeriesByGenreList(
+        val items = repository.getSeriesByGenreListV2(
            imageHost = coverImageHost,
            genreId = genreId,
            isAuth = isAuth,
            contentType = contentType,
            offset = offset,
-            limit = limit
-        ).filter { !blockMemberRepository.isBlocked(blockedMemberId = member.id!!, memberId = it.member!!.id!!) }
+            limit = limit,
+            locale = langContext.lang.code,
+            memberId = member.id
+        ).map { item ->
+            item.copy(publishedDaysOfWeek = publishedDaysOfWeekText(item.rawPublishedDaysOfWeek))
+        }

-        val items = seriesToSeriesListItem(seriesList = rawItems, isAdult = isAuth, contentType = contentType)
-        return GetSeriesListResponse(totalCount, getTranslatedSeriesList(items))
+        return GetSeriesListResponse(totalCount, items)
    }

    @Transactional
@@ -459,19 +473,16 @@ class ContentSeriesService(
        member: Member
    ): List<GetSeriesListResponse.SeriesListItem> {
        val isAuth = member.auth != null && isAdultContentVisible
-        val seriesList = repository.getRecommendSeriesList(
+        return repository.getRecommendSeriesListV2(
+            imageHost = coverImageHost,
            isAuth = isAuth,
            contentType = contentType,
-            limit = 20
-        ).filter { !blockMemberRepository.isBlocked(blockedMemberId = member.id!!, memberId = it.member!!.id!!) }
-
-        return getTranslatedSeriesList(
-            seriesToSeriesListItem(
-                seriesList = seriesList,
-                isAdult = isAuth,
-                contentType = contentType
-            )
-        )
+            limit = 20,
+            locale = langContext.lang.code,
+            memberId = member.id
+        ).map { item ->
+            item.copy(publishedDaysOfWeek = publishedDaysOfWeekText(item.rawPublishedDaysOfWeek))
+        }
    }

    fun fetchSeriesByCurationId(
@@ -480,13 +491,16 @@ class ContentSeriesService(
        isAdult: Boolean,
        contentType: ContentType
    ): List<GetSeriesListResponse.SeriesListItem> {
-        val seriesList = repository.findByCurationId(
+        return repository.findByCurationIdV2(
+            imageHost = coverImageHost,
            curationId = curationId,
            memberId = memberId,
            isAdult = isAdult,
-            contentType = contentType
-        )
-        return getTranslatedSeriesList(seriesToSeriesListItem(seriesList, isAdult, contentType))
+            contentType = contentType,
+            locale = langContext.lang.code
+        ).map { item ->
+            item.copy(publishedDaysOfWeek = publishedDaysOfWeekText(item.rawPublishedDaysOfWeek))
+        }
    }

    fun getDayOfWeekSeriesList(
@@ -497,72 +511,18 @@ class ContentSeriesService(
        offset: Long = 0,
        limit: Long = 10
    ): List<GetSeriesListResponse.SeriesListItem> {
-        var seriesList = repository.getDayOfWeekSeriesList(
+        return repository.getDayOfWeekSeriesListV2(
+            imageHost = coverImageHost,
            dayOfWeek = dayOfWeek,
            contentType = contentType,
            isAdult = isAdult,
            offset = offset,
-            limit = limit
-        )
-
-        seriesList = if (memberId != null) {
-            seriesList.filter {
-                !blockMemberRepository.isBlocked(
-                    blockedMemberId = memberId,
-                    memberId = it.member!!.id!!
-                )
-            }
-        } else {
-            seriesList
+            limit = limit,
+            locale = langContext.lang.code,
+            memberId = memberId
+        ).map { item ->
+            item.copy(publishedDaysOfWeek = publishedDaysOfWeekText(item.rawPublishedDaysOfWeek))
        }
-
-        return getTranslatedSeriesList(seriesToSeriesListItem(seriesList, isAdult, contentType))
-    }
-
-    private fun seriesToSeriesListItem(
-        seriesList: List<Series>,
-        isAdult: Boolean,
-        contentType: ContentType
-    ): List<GetSeriesListResponse.SeriesListItem> {
-        return seriesList
-            .map {
-                GetSeriesListResponse.SeriesListItem(
-                    seriesId = it.id!!,
-                    title = it.title,
-                    coverImage = "$coverImageHost/${it.coverImage!!}",
-                    publishedDaysOfWeek = publishedDaysOfWeekText(it.publishedDaysOfWeek),
-                    isComplete = it.state == SeriesState.COMPLETE,
-                    creator = GetSeriesListResponse.SeriesListItemCreator(
-                        creatorId = it.member!!.id!!,
-                        nickname = it.member!!.nickname,
-                        profileImage = "$coverImageHost/${it.member!!.profileImage!!}"
-                    )
-                )
-            }
-            .map {
-                it.numberOfContent = seriesContentRepository.getContentCount(
-                    seriesId = it.seriesId,
-                    isAdult = isAdult,
-                    contentType = contentType
-                )
-
-                it
-            }
-            .filter {
-                it.numberOfContent > 0
-            }
-            .map {
-                val nowDateTime = LocalDateTime.now()
-
-                it.isNew = seriesContentRepository.isNewContent(
-                    seriesId = it.seriesId,
-                    isAdult = isAdult,
-                    fromDate = nowDateTime.minusDays(7),
-                    nowDate = nowDateTime
-                )
-
-                it
-            }
    }

    private fun publishedDaysOfWeekText(publishedDaysOfWeek: Set<SeriesPublishedDaysOfWeek>): String {
@@ -632,39 +592,4 @@ class ContentSeriesService(
            }
        }
    }
-
-    /**
-     * 시리즈 리스트의 제목을 현재 언어(locale)에 맞춰 일괄 번역한다.
-     *
-     * 처리 절차:
-     * - 입력된 시리즈들의 seriesId 집합을 만들고, 요청 언어 코드(langContext.lang.code)로
-     *   seriesTranslationRepository에서 번역 데이터를 한 번에 조회한다.
-     * - 각 항목에 대해 번역된 제목이 존재하고 비어있지 않으면 title만 번역 값으로 교체한다.
-     * - 번역이 없거나 공백이면 원본 항목을 그대로 반환한다.
-     *
-     * 성능:
-     * - N건의 항목을 1회의 조회로 해결하기 위해 IN 쿼리를 사용한다.
-     *
-     * @param seriesList 번역 대상 SeriesListItem 목록
-     * @return 제목이 가능한 항목은 번역된 목록(불변 사본), 그 외는 원본 항목 유지
-     */
-    private fun getTranslatedSeriesList(
-        seriesList: List<GetSeriesListResponse.SeriesListItem>
-    ): List<GetSeriesListResponse.SeriesListItem> {
-        val seriesIds = seriesList.map { it.seriesId }
-        if (seriesIds.isEmpty()) return seriesList
-
-        val translations = seriesTranslationRepository
-            .findBySeriesIdInAndLocale(seriesIds = seriesIds, locale = langContext.lang.code)
-            .associateBy { it.seriesId }
-
-        return seriesList.map { item ->
-            val translatedTitle = translations[item.seriesId]?.renderedPayload?.title
-            if (translatedTitle.isNullOrBlank()) {
-                item
-            } else {
-                item.copy(title = translatedTitle)
-            }
-        }
-    }
 }
--- a/src/main/kotlin/kr/co/vividnext/sodalive/content/series/GetSeriesListResponse.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/content/series/GetSeriesListResponse.kt
@@ -1,10 +1,13 @@
 package kr.co.vividnext.sodalive.content.series

+import com.querydsl.core.annotations.QueryProjection
+import kr.co.vividnext.sodalive.creator.admin.content.series.SeriesPublishedDaysOfWeek
+
 data class GetSeriesListResponse(
    val totalCount: Int,
    val items: List<SeriesListItem>
 ) {
-    data class SeriesListItem(
+    data class SeriesListItem @QueryProjection constructor(
        val seriesId: Long,
        val title: String,
        val coverImage: String,
@@ -13,10 +16,11 @@ data class GetSeriesListResponse(
        val creator: SeriesListItemCreator,
        var numberOfContent: Int = 0,
        var isNew: Boolean = false,
-        var isPopular: Boolean = false
+        var isPopular: Boolean = false,
+        val rawPublishedDaysOfWeek: Set<SeriesPublishedDaysOfWeek> = emptySet()
    )

-    data class SeriesListItemCreator(
+    data class SeriesListItemCreator @QueryProjection constructor(
        val creatorId: Long,
        val nickname: String,
        val profileImage: String
--- a/src/main/kotlin/kr/co/vividnext/sodalive/query/recommend/RecommendChannelQueryRepository.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/query/recommend/RecommendChannelQueryRepository.kt
@@ -6,6 +6,7 @@ import kr.co.vividnext.sodalive.content.ContentType
 import kr.co.vividnext.sodalive.content.QAudioContent.audioContent
 import kr.co.vividnext.sodalive.content.comment.QAudioContentComment.audioContentComment
 import kr.co.vividnext.sodalive.content.like.QAudioContentLike.audioContentLike
+import kr.co.vividnext.sodalive.content.translation.QContentTranslation.contentTranslation
 import kr.co.vividnext.sodalive.member.MemberRole
 import kr.co.vividnext.sodalive.member.QMember.member
 import kr.co.vividnext.sodalive.member.auth.QAuth.auth
@@ -83,7 +84,8 @@ class RecommendChannelQueryRepository(
    fun getContentsByCreatorIdLikeDesc(
        creatorId: Long,
        memberId: Long?,
-        isAdult: Boolean
+        isAdult: Boolean,
+        locale: String? = null
    ): List<RecommendChannelContentItem> {
        val blockMemberCondition = if (memberId != null) {
            blockMember.member.id.eq(audioContent.member.id)
@@ -99,11 +101,26 @@ class RecommendChannelQueryRepository(
            where = where.and(audioContent.isAdult.isFalse)
        }

+        val titleExpression = if (locale != null) {
+            val translatedTitle = Expressions.stringTemplate(
+                "JSON_EXTRACT({0}, '$.title')",
+                contentTranslation.renderedPayload
+            )
+            val coalesceTitle = Expressions.stringTemplate(
+                "COALESCE(NULLIF({0}, ''), {1})",
+                translatedTitle,
+                audioContent.title
+            )
+            coalesceTitle
+        } else {
+            audioContent.title
+        }
+
        var select = queryFactory
            .select(
                QRecommendChannelContentItem(
                    audioContent.id,
-                    audioContent.title,
+                    titleExpression,
                    audioContent.coverImage.prepend("/").prepend(imageHost),
                    audioContentLike.id.countDistinct(),
                    audioContentComment.id.countDistinct()
@@ -121,6 +138,14 @@ class RecommendChannelQueryRepository(
                    .and(audioContentComment.isActive.isTrue)
            )

+        if (locale != null) {
+            select = select.leftJoin(contentTranslation)
+                .on(
+                    contentTranslation.contentId.eq(audioContent.id)
+                        .and(contentTranslation.locale.eq(locale))
+                )
+        }
+
        if (memberId != null) {
            where = where.and(blockMember.id.isNull)
            select = select.leftJoin(blockMember).on(blockMemberCondition)
--- a/src/main/kotlin/kr/co/vividnext/sodalive/query/recommend/RecommendChannelQueryService.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/query/recommend/RecommendChannelQueryService.kt
@@ -1,13 +1,17 @@
 package kr.co.vividnext.sodalive.query.recommend

 import kr.co.vividnext.sodalive.content.ContentType
+import kr.co.vividnext.sodalive.i18n.LangContext
 import org.springframework.cache.annotation.Cacheable
 import org.springframework.stereotype.Service
 import org.springframework.transaction.annotation.Transactional

@Service
@Transactional(readOnly = true)
-class RecommendChannelQueryService(private val repository: RecommendChannelQueryRepository) {
+class RecommendChannelQueryService(
+    private val repository: RecommendChannelQueryRepository,
+    private val langContext: LangContext
+) {
    @Cacheable(
        cacheNames = ["default"],
        key = "'recommendChannel:' + (#memberId ?: 'guest') + ':' + #isAdult + ':' + #contentType"
@@ -27,7 +31,8 @@ class RecommendChannelQueryService(private val repository: RecommendChannelQuery
            it.contentList = repository.getContentsByCreatorIdLikeDesc(
                creatorId = it.channelId,
                memberId = memberId,
-                isAdult = isAdult
+                isAdult = isAdult,
+                locale = langContext.lang.code
            )

            it
--- a/src/main/kotlin/kr/co/vividnext/sodalive/rank/RankingRepository.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/rank/RankingRepository.kt
@@ -69,7 +69,8 @@ class RankingRepository(
        offset: Long,
        limit: Long,
        sortType: String,
-        theme: String = ""
+        theme: String = "",
+        locale: String? = null
    ): List<GetAudioContentRankingItem> {
        val blockMemberCondition = if (memberId != null) {
            blockMember.member.id.eq(member.id)
@@ -79,6 +80,8 @@ class RankingRepository(
            null
        }

+        val contentTranslation = kr.co.vividnext.sodalive.content.translation.QContentTranslation.contentTranslation
+
        var where = audioContent.isActive.isTrue
            .and(audioContent.member.isActive.isTrue)
            .and(audioContent.member.isNotNull)
@@ -109,11 +112,26 @@ class RankingRepository(
            where = where.and(audioContentTheme.theme.eq(theme))
        }

+        val titleExpression = if (locale != null) {
+            val translatedTitle = Expressions.stringTemplate(
+                "JSON_EXTRACT({0}, '$.title')",
+                contentTranslation.renderedPayload
+            )
+            val coalesceTitle = Expressions.stringTemplate(
+                "COALESCE(NULLIF({0}, ''), {1})",
+                translatedTitle,
+                audioContent.title
+            )
+            coalesceTitle
+        } else {
+            audioContent.title
+        }
+
        var select = queryFactory
            .select(
                QGetAudioContentRankingItem(
                    audioContent.id,
-                    audioContent.title,
+                    titleExpression,
                    audioContent.coverImage.prepend("/").prepend(imageHost),
                    audioContentTheme.theme,
                    audioContent.price,
@@ -167,6 +185,11 @@ class RankingRepository(
            }
        }

+        if (locale != null) {
+            select = select.leftJoin(contentTranslation)
+                .on(contentTranslation.contentId.eq(audioContent.id).and(contentTranslation.locale.eq(locale)))
+        }
+
        if (memberId != null) {
            where = where.and(blockMember.id.isNull)
            select = select.leftJoin(blockMember).on(blockMemberCondition)
--- a/src/main/kotlin/kr/co/vividnext/sodalive/rank/RankingService.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/rank/RankingService.kt
@@ -9,6 +9,7 @@ import kr.co.vividnext.sodalive.creator.admin.content.series.Series
 import kr.co.vividnext.sodalive.creator.admin.content.series.SeriesPublishedDaysOfWeek
 import kr.co.vividnext.sodalive.creator.admin.content.series.SeriesState
 import kr.co.vividnext.sodalive.explorer.GetExplorerSectionResponse
+import kr.co.vividnext.sodalive.i18n.LangContext
 import org.springframework.beans.factory.annotation.Value
 import org.springframework.stereotype.Service
 import java.time.LocalDateTime
@@ -17,6 +18,7 @@ import java.time.LocalDateTime
 class RankingService(
    private val repository: RankingRepository,
    private val seriesContentRepository: ContentSeriesContentRepository,
+    private val langContext: LangContext,

    @Value("\${cloud.aws.cloud-front.host}")
    private val imageHost: String
@@ -59,7 +61,8 @@ class RankingService(
                offset = offset,
                limit = limit,
                sortType = sortType,
-                theme = theme
+                theme = theme,
+                locale = langContext.lang.code
            )
            loopCount++
        } while (contentList.size < 5 && loopCount < 5)
Author	SHA1	Message	Date
Klaus	ec077d23f0	인기 캐릭터 번역 조회 개선	2026-02-13 15:46:54 +09:00
Klaus	01a1a05d77	시리즈 목록 조회 쿼리 최적화	2026-02-13 15:15:31 +09:00
Klaus	ac0def6187	OriginalAudioDrama 리스트 조회 쿼리 최적화 OriginalAudioDrama 리스트 조회 시 엔티티 대신 DTO를 직접 조회하도록 개선 콘텐츠 개수, 신규 콘텐츠 여부, 번역 제목을 서브쿼리와 조인을 통해 한 번에 가져오도록 하여 기존의 N+1 문제와 다수의 추가 쿼리 발생을 해결	2026-02-13 12:10:13 +09:00
Klaus	341f24c643	HomeService fetchData 리팩토링 및 DB JOIN 기반 번역 적용 fetchData 함수에서 별도로 수행하던 번역 데이터 조회를 DB JOIN 및 COALESCE를 사용하도록 개선하여 성능을 최적화함. - AudioContentRepository, RankingRepository 등에 locale 파라미터 추가 - DB 레벨에서 번역된 제목을 조회하도록 쿼리 수정 - HomeService에서 불필요한 getTranslatedContentList 호출 제거	2026-02-13 10:37:06 +09:00