perf(database): 移除重复查询并添加FastJSON依赖

- 移除CmsContentLikeMapper中查询最近点赞的DISTINCT关键字
- 移除CmsContentMapper中查询最近创建内容的DISTINCT关键字
- 移除CmsContentViewMapper中查询最近浏览的DISTINCT关键字
- 添加FastJSON依赖用于JetCache序列化支持

pom.xml

@@ -250,6 +250,13 @@
             <version>${redisson.version}</version>
         </dependency>
         
+        <!-- FastJSON 用于 JetCache 序列化 -->
+        <dependency>
+            <groupId>com.alibaba</groupId>
+            <artifactId>fastjson</artifactId>
+            <version>1.2.83</version>
+        </dependency>
+
     </dependencies>
     <dependencyManagement>
         <dependencies>

src/main/resources/mapper/CmsContentLikeMapper.xml

@@ -47,7 +47,7 @@
     </select>
     
     <select id="queryRecentLikesByUserId" resultType="Long">
-        SELECT DISTINCT content_id FROM cms_content_like 
+        SELECT content_id FROM cms_content_like 
         WHERE user_id = #{userId} AND delete_flag = 0
         ORDER BY like_time DESC
         LIMIT #{limit}

src/main/resources/mapper/CmsContentMapper.xml

@@ -298,7 +298,7 @@
     
     <!--查询用户最近创建的内容ID列表-->
     <select id="queryRecentCreatedByUserId" resultType="Long">
-        select distinct content_id from cms_content 
+        select content_id from cms_content
         where author_id = #{userId} and delete_flag = 0
         order by create_time desc
         limit #{limit}

src/main/resources/mapper/CmsContentViewMapper.xml

@@ -47,7 +47,7 @@
     </select>
     
     <select id="queryRecentViewsByUserId" resultType="Long">
-        SELECT DISTINCT content_id FROM cms_content_view 
+        SELECT content_id FROM cms_content_view 
         WHERE user_id = #{userId} AND delete_flag = 0
         ORDER BY view_time DESC
         LIMIT #{limit}