fix: sendKeywordNotification 메소드 1+4N 개선

src/main/java/in/koreatech/koin/domain/community/article/dto/ArticleSummary.java

@@ -0,0 +1,10 @@
+package in.koreatech.koin.domain.community.article.dto;
+
+public record ArticleSummary(
+    Integer id,
+    String title
+) {
+    public static ArticleSummary of(Integer id, String title) {
+        return new ArticleSummary(id, title);
+    }
+}

src/main/java/in/koreatech/koin/domain/community/article/repository/ArticleRepository.java

@@ -15,6 +15,7 @@
 import org.springframework.data.repository.Repository;
 import org.springframework.data.repository.query.Param;
 
+import in.koreatech.koin.domain.community.article.dto.ArticleSummary;
 import in.koreatech.koin.domain.community.article.exception.ArticleNotFoundException;
 import in.koreatech.koin.domain.community.article.exception.BoardNotFoundException;
 import in.koreatech.koin.domain.community.article.model.Article;
@@ -31,6 +32,13 @@ public interface ArticleRepository extends Repository<Article, Integer> {
 
     List<Article> findAllByIdIn(Collection<Integer> articleIds);
 
+    @Query(value = """
+        SELECT new in.koreatech.koin.domain.community.article.dto.ArticleSummary(a.id, a.title)
+        FROM Article a
+        WHERE a.id IN :articleIds
+        """)
+    List<ArticleSummary> findAllSummaryByIdIn(@Param("articleIds") Collection<Integer> articleIds);
+
     Page<Article> findAll(Pageable pageable);
 
     Page<Article> findAllByBoardIdNot(Integer boardId, PageRequest pageRequest);

src/main/java/in/koreatech/koin/domain/community/keyword/service/KeywordService.java

@@ -13,6 +13,7 @@
 
 import in.koreatech.koin.common.event.ArticleKeywordEvent;
 import in.koreatech.koin.domain.community.article.dto.ArticleKeywordResult;
+import in.koreatech.koin.domain.community.article.dto.ArticleSummary;
 import in.koreatech.koin.domain.community.article.model.Article;
 import in.koreatech.koin.domain.community.article.repository.ArticleRepository;
 import in.koreatech.koin.domain.community.keyword.dto.ArticleKeywordCreateRequest;
@@ -150,8 +151,8 @@ public void sendKeywordNotification(KeywordNotificationRequest request) {
             return;
         }
 
-        List<Article> articles = articleRepository.findAllByIdIn(request.updateNotification());
-        List<ArticleKeywordEvent> keywordEvents = keywordExtractor.matchKeyword(articles, null);
+        List<ArticleSummary> articleSummaries = articleRepository.findAllSummaryByIdIn(request.updateNotification());
+        List<ArticleKeywordEvent> keywordEvents = keywordExtractor.matchKeyword(articleSummaries, null);
         for (ArticleKeywordEvent event : keywordEvents) {
             eventPublisher.publishEvent(event);
         }

src/main/java/in/koreatech/koin/domain/community/util/KeywordExtractor.java

@@ -7,39 +7,42 @@
 
 import org.springframework.stereotype.Component;
 
-import in.koreatech.koin.domain.community.article.model.Article;
+import in.koreatech.koin.domain.community.article.dto.ArticleSummary;
 import in.koreatech.koin.domain.community.keyword.model.ArticleKeywordUserMap;
 import in.koreatech.koin.domain.community.keyword.model.KeywordMatchResult;
 
 @Component
 public class KeywordExtractor {
 
     public List<KeywordMatchResult> matchKeyword(
-        List<Article> articles, List<ArticleKeywordUserMap> articleKeywordUserMaps, Integer authorId
+        List<ArticleSummary> articleSummaries, List<ArticleKeywordUserMap> articleKeywordUserMaps, Integer authorId
     ) {
         Set<KeywordMatchResult> keywordMatchResults = new HashSet<>();
 
-        for (Article article : articles) {
+        for (ArticleSummary articleSummary : articleSummaries) {
             for (ArticleKeywordUserMap articleKeywordUserMap : articleKeywordUserMaps) {
-                if (isMatchable(article, articleKeywordUserMap, authorId)) {
-                    addOrUpdateResult(keywordMatchResults, article, articleKeywordUserMap);
+                if (isMatchable(articleSummary, articleKeywordUserMap, authorId)) {
+                    addOrUpdateResult(keywordMatchResults, articleSummary, articleKeywordUserMap);
                 }
             }
         }
 
         return keywordMatchResults.stream().toList();
     }
 
-    private boolean isMatchable(Article article, ArticleKeywordUserMap articleKeywordUserMap, Integer authorId) {
+    private boolean isMatchable(
+        ArticleSummary articleSummaries, ArticleKeywordUserMap articleKeywordUserMap, Integer authorId
+    ) {
         return !Objects.equals(articleKeywordUserMap.getUserId(), authorId)
-            && article.getTitle().contains(articleKeywordUserMap.getKeyword());
+            && articleSummaries.title().contains(articleKeywordUserMap.getKeyword());
     }
 
     private void addOrUpdateResult(
-        Set<KeywordMatchResult> keywordMatchResults, Article article, ArticleKeywordUserMap articleKeywordUserMap
+        Set<KeywordMatchResult> keywordMatchResults, ArticleSummary ArticleSummary,
+        ArticleKeywordUserMap articleKeywordUserMap
     ) {
         KeywordMatchResult keywordMatchResult = KeywordMatchResult.of(
-            article.getId(), articleKeywordUserMap.getUserId(), articleKeywordUserMap.getKeyword()
+            ArticleSummary.id(), articleKeywordUserMap.getUserId(), articleKeywordUserMap.getKeyword()
         );
 
         keywordMatchResults.stream()