[feat/#119] 인기순 정렬 기능 구현

build.gradle

@@ -35,10 +35,16 @@ dependencies {
 	testImplementation 'org.springframework.boot:spring-boot-starter-test'
 	testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
 
+	// Testcontainers for integration tests
+	testImplementation 'org.testcontainers:testcontainers:1.19.3'
+	testImplementation 'org.testcontainers:mysql:1.19.3'
+	testImplementation 'org.testcontainers:junit-jupiter:1.19.3'
+
 	implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
 	implementation 'org.springframework.boot:spring-boot-starter-data-redis'
 
 	runtimeOnly 'com.mysql:mysql-connector-j'
+	testRuntimeOnly 'com.h2database:h2'  // 테스트용 in-memory database
 
 	developmentOnly 'org.springframework.boot:spring-boot-devtools'
 	compileOnly 'org.projectlombok:lombok'

src/main/java/com/techfork/domain/activity/service/ActivityCommandService.java

@@ -43,9 +43,9 @@ public void saveReadPost(Long userId, ReadPostRequest request) {
         Post post = postRepository.findById(request.postId())
                 .orElseThrow(() -> new GeneralException(PostErrorCode.POST_NOT_FOUND));
 
-        if (readPostRepository.existsByUserAndPost(user, post)) {
-            log.info("User {} has already read post {}", userId, request.postId());
-            return;
+        boolean isFirstRead = !readPostRepository.existsByUserAndPost(user, post);
+        if (isFirstRead) {
+            post.incrementViewCount();
         }
 
         ReadPost readPost = ReadPost.create(
@@ -56,7 +56,8 @@ public void saveReadPost(Long userId, ReadPostRequest request) {
         );
 
         readPostRepository.save(readPost);
-        log.info("Saved read post for user {} and post {}", userId, request.postId());
+        log.info("Saved read post for user {} and post {} (viewCount incremented: {})",
+                userId, request.postId(), isFirstRead);
     }
 
     @Transactional

src/main/java/com/techfork/domain/post/converter/PostConverter.java

@@ -39,6 +39,7 @@ public PostDetailDto toPostDetailDto(PostDetailDto baseDto, List<String> keyword
                 .url(baseDto.url())
                 .logoUrl(baseDto.logoUrl())
                 .publishedAt(baseDto.publishedAt())
+                .viewCount(baseDto.viewCount())
                 .keywords(keywords)
                 .build();
     }

src/main/java/com/techfork/domain/post/dto/CompanyListResponse.java

@@ -1,11 +1,13 @@
-package com.techfork.domain.post.dto;
-
-import lombok.Builder;
-
-import java.util.List;
-
-@Builder
-public record CompanyListResponse(
-        List<String> companies
-) {
-}
+package com.techfork.domain.post.dto;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Builder;
+
+import java.util.List;
+
+@Builder
+@Schema(name = "CompanyListResponse")
+public record CompanyListResponse(
+        List<String> companies
+) {
+}

src/main/java/com/techfork/domain/post/dto/PostDetailDto.java

@@ -1,19 +1,22 @@
-package com.techfork.domain.post.dto;
-
-import lombok.Builder;
-
-import java.time.LocalDateTime;
-import java.util.List;
-
-@Builder
-public record PostDetailDto(
-        Long id,
-        String title,
-        String summary,
-        String company,
-        String url,
-        String logoUrl,
-        LocalDateTime publishedAt,
-        List<String> keywords
-) {
-}
+package com.techfork.domain.post.dto;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Builder;
+
+import java.time.LocalDateTime;
+import java.util.List;
+
+@Builder
+@Schema(name = "PostDetailResponse")
+public record PostDetailDto(
+        Long id,
+        String title,
+        String summary,
+        String company,
+        String url,
+        String logoUrl,
+        LocalDateTime publishedAt,
+        Long viewCount,
+        List<String> keywords
+) {
+}

src/main/java/com/techfork/domain/post/dto/PostInfoDto.java

@@ -1,18 +1,21 @@
-package com.techfork.domain.post.dto;
-
-import lombok.Builder;
-
-import java.time.LocalDateTime;
-import java.util.List;
-
-@Builder
-public record PostInfoDto(
-        Long id,
-        String title,
-        String company,
-        String url,
-        String logoUrl,
-        LocalDateTime publishedAt,
-        List<String> keywords
-) {
-}
+package com.techfork.domain.post.dto;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Builder;
+
+import java.time.LocalDateTime;
+import java.util.List;
+
+@Builder
+@Schema(name = "PostInfoDto")
+public record PostInfoDto(
+        Long id,
+        String title,
+        String company,
+        String url,
+        String logoUrl,
+        LocalDateTime publishedAt,
+        Long viewCount,
+        List<String> keywords
+) {
+}

src/main/java/com/techfork/domain/post/dto/PostListResponse.java

@@ -1,13 +1,15 @@
-package com.techfork.domain.post.dto;
-
-import lombok.Builder;
-
-import java.util.List;
-
-@Builder
-public record PostListResponse(
-        List<PostInfoDto> posts,
-        Long lastPostId,
-        boolean hasNext
-) {
-}
+package com.techfork.domain.post.dto;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Builder;
+
+import java.util.List;
+
+@Builder
+@Schema(name = "PostListResponse")
+public record PostListResponse(
+        List<PostInfoDto> posts,
+        Long lastPostId,
+        boolean hasNext
+) {
+}

src/main/java/com/techfork/domain/post/entity/Post.java

@@ -46,6 +46,9 @@ public class Post extends BaseEntity {
     @Column
     private LocalDateTime embeddedAt;
 
+    @Column(nullable = false)
+    private Long viewCount = 0L;
+
     @ManyToOne(fetch = FetchType.LAZY)
     @JoinColumn(name = "tech_blog_id", nullable = false)
     private TechBlog techBlog;
@@ -94,4 +97,8 @@ public void addKeyword(PostKeyword keyword) {
     public void clearKeywords() {
         this.keywords.clear();
     }
+
+    public void incrementViewCount() {
+        this.viewCount++;
+    }
 }

src/main/java/com/techfork/domain/post/repository/PostRepository.java

@@ -36,7 +36,7 @@ public interface PostRepository extends JpaRepository<Post, Long> {
 
     @Query("""
             SELECT new com.techfork.domain.post.dto.PostInfoDto(
-            p.id, p.title, t.companyName, p.url, t.logoUrl, p.publishedAt, null)
+            p.id, p.title, t.companyName, p.url, t.logoUrl, p.publishedAt, p.viewCount, null)
             FROM Post p
             JOIN TechBlog t on p.techBlog.id = t.id
             WHERE (:company IS NULL OR p.company = :company)
@@ -51,7 +51,7 @@ List<PostInfoDto> findByCompanyWithCursor(
 
     @Query("""
             SELECT new com.techfork.domain.post.dto.PostInfoDto(
-            p.id, p.title, t.companyName, p.url, t.logoUrl, p.publishedAt, null)
+            p.id, p.title, t.companyName, p.url, t.logoUrl, p.publishedAt, p.viewCount, null)
             FROM Post p
             JOIN TechBlog t on p.techBlog.id = t.id
             WHERE :lastPostId IS NULL OR p.id < :lastPostId
@@ -64,11 +64,11 @@ List<PostInfoDto> findRecentPostsWithCursor(
 
     @Query("""
             SELECT new com.techfork.domain.post.dto.PostInfoDto(
-            p.id, p.title, t.companyName, p.url, t.logoUrl, p.publishedAt, null)
+            p.id, p.title, t.companyName, p.url, t.logoUrl, p.publishedAt, p.viewCount, null)
             FROM Post p
             JOIN TechBlog t on p.techBlog.id = t.id
             WHERE :lastPostId IS NULL OR p.id < :lastPostId
-            ORDER BY p.crawledAt DESC, p.id DESC
+            ORDER BY p.viewCount DESC, p.id DESC
             """)
     List<PostInfoDto> findPopularPostsWithCursor(
             @Param("lastPostId") Long lastPostId,
@@ -77,7 +77,7 @@ List<PostInfoDto> findPopularPostsWithCursor(
 
     @Query("""
             SELECT new com.techfork.domain.post.dto.PostDetailDto(
-            p.id, p.title, p.summary, t.companyName, p.url, t.logoUrl, p.publishedAt, null)
+            p.id, p.title, p.summary, t.companyName, p.url, t.logoUrl, p.publishedAt, p.viewCount, null)
             FROM Post p
             JOIN TechBlog t on p.techBlog.id = t.id
             WHERE p.id = :id

src/main/java/com/techfork/domain/post/service/PostQueryService.java

@@ -1,7 +1,10 @@
 package com.techfork.domain.post.service;
 
 import com.techfork.domain.post.converter.PostConverter;
-import com.techfork.domain.post.dto.*;
+import com.techfork.domain.post.dto.CompanyListResponse;
+import com.techfork.domain.post.dto.PostDetailDto;
+import com.techfork.domain.post.dto.PostInfoDto;
+import com.techfork.domain.post.dto.PostListResponse;
 import com.techfork.domain.post.entity.PostKeyword;
 import com.techfork.domain.post.enums.EPostSortType;
 import com.techfork.domain.post.repository.PostKeywordRepository;
@@ -90,6 +93,7 @@ private List<PostInfoDto> attachKeywordsToPostInfoList(List<PostInfoDto> posts)
                         .url(post.url())
                         .logoUrl(post.logoUrl())
                         .publishedAt(post.publishedAt())
+                        .viewCount(post.viewCount())
                         .keywords(keywordMap.getOrDefault(post.id(), List.of()))
                         .build())
                 .toList();