Redis Cache annotation

src/main/java/com/rest/api/config/RedisConfig.java

@@ -46,6 +46,4 @@ public class RedisConfig {
         return RedisCacheManager.RedisCacheManagerBuilder.fromConnectionFactory(connectionFactory).cacheDefaults(configuration)
                 .withInitialCacheConfigurations(cacheConfigurations).build();
     }
-
-
 }

src/main/java/com/rest/api/entity/board/Post.java

@@ -5,6 +5,7 @@ import com.rest.api.entity.User;
 import com.rest.api.entity.common.CommonDateEntity;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
+import lombok.Setter;
 import org.hibernate.annotations.Proxy;
 
 import javax.persistence.*;
@@ -12,6 +13,7 @@ import java.io.Serializable;
 
 @Entity
 @Getter
+@Setter
 @NoArgsConstructor
 public class Post extends CommonDateEntity implements Serializable {
     @Id

src/main/java/com/rest/api/repo/board/PostJpaRepo.java

@@ -1,10 +1,7 @@
 package com.rest.api.repo.board;
 
-import com.rest.api.common.CacheKey;
 import com.rest.api.entity.board.Board;
 import com.rest.api.entity.board.Post;
-import org.springframework.cache.annotation.CacheEvict;
-import org.springframework.cache.annotation.Caching;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 import java.util.List;

src/main/java/com/rest/api/service/board/BoardService.java

@@ -15,6 +15,7 @@ import com.rest.api.service.cache.CacheSevice;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.cache.annotation.CacheEvict;
+import org.springframework.cache.annotation.CachePut;
 import org.springframework.cache.annotation.Cacheable;
 import org.springframework.stereotype.Service;
 
@@ -39,19 +40,19 @@ public class BoardService {
         return Optional.ofNullable(boardJpaRepo.findByName(boardName)).orElseThrow(CResourceNotExistException::new);
     }
 
-    // 게시판 이름으로 게시물 리스트 조회.
+    // 게시판 이름으로 게시글 리스트 조회.
     @Cacheable(value = CacheKey.POSTS, key = "#boardName", unless = "#result == null")
     public List<Post> findPosts(String boardName) {
         return postJpaRepo.findByBoard(findBoard(boardName));
     }
 
-    // 게시물ID로 게시물 단건 조회. 없을경우 CResourceNotExistException 처리
+    // 게시글ID로 게시글 단건 조회. 없을경우 CResourceNotExistException 처리
     @Cacheable(value = CacheKey.POST, key = "#postId", unless = "#result == null")
     public Post getPost(long postId) {
         return postJpaRepo.findById(postId).orElseThrow(CResourceNotExistException::new);
     }
 
-    // 게시물을 등록합니다. 게시물의 회원UID가 조회되지 않으면 CUserNotFoundException 처리합니다.
+    // 게시글을 등록합니다. 게시글의 회원UID가 조회되지 않으면 CUserNotFoundException 처리합니다.
     @CacheEvict(value = CacheKey.POSTS, key = "#boardName")
     public Post writePost(String uid, String boardName, ParamsPost paramsPost) {
         Board board = findBoard(boardName);
@@ -59,7 +60,8 @@ public class BoardService {
         return postJpaRepo.save(post);
     }
 
-    // 게시물을 수정합니다. 게시물 등록자와 로그인 회원정보가 틀리면 CNotOwnerException 처리합니다.
+    // 게시글을 수정합니다. 게시글 등록자와 로그인 회원정보가 틀리면 CNotOwnerException 처리합니다.
+    //@CachePut(value = CacheKey.POST, key = "#postId") 갱신된 정보만 캐시할경우에만 사용!
     public Post updatePost(long postId, String uid, ParamsPost paramsPost) {
         Post post = getPost(postId);
         User user = post.getUser();
@@ -72,7 +74,7 @@ public class BoardService {
         return post;
     }
 
-    // 게시물을 삭제합니다. 게시물 등록자와 로그인 회원정보가 틀리면 CNotOwnerException 처리합니다.
+    // 게시글을 삭제합니다. 게시글 등록자와 로그인 회원정보가 틀리면 CNotOwnerException 처리합니다.
     public boolean deletePost(long postId, String uid) {
         Post post = getPost(postId);
         User user = post.getUser();

src/test/java/com/rest/api/cache/CacheRepo.java

@@ -0,0 +1,67 @@
+package com.rest.api.cache;
+
+import com.rest.api.entity.board.Post;
+import org.springframework.cache.annotation.CacheEvict;
+import org.springframework.cache.annotation.CachePut;
+import org.springframework.cache.annotation.Cacheable;
+import org.springframework.stereotype.Service;
+
+@Service
+public class CacheRepo {
+
+    private static final String CACHE_KEY = "CACHE_TEST";
+
+    @Cacheable(value = CACHE_KEY, key = "#postId")
+    public Post getPost(long postId) {
+        Post post = new Post();
+        post.setPostId(postId);
+        post.setTitle("title_" + postId);
+        post.setAuthor("author_" + postId);
+        post.setContent("content_" + postId);
+        return post;
+    }
+
+    @CachePut(value = CACHE_KEY, key = "#post.postId")
+    public Post updatePost(Post post) {
+        return post;
+    }
+
+    @Cacheable(value = CACHE_KEY, key = "{#postId, #title}")
+    public Post getPostMultiKey(long postId, String title) {
+        Post post = new Post();
+        post.setPostId(postId);
+        post.setTitle("title_" + postId);
+        post.setAuthor("author_" + postId);
+        post.setContent("content_" + postId);
+        return post;
+    }
+
+    @CachePut(value = CACHE_KEY, key = "{#post.postId, #post.title}")
+//    @CachePut(value = CACHE_KEY, key = "{#post.postId, #post.getTitle()}")
+    public Post updatePostMultiKey(Post post) {
+        return post;
+    }
+
+    @CacheEvict(cacheNames = {CACHE_KEY}, allEntries = true)
+    public void clearCache(){}
+
+    @Cacheable(value = CACHE_KEY, key = "{#postId}", condition="#postId > 10")
+    public Post getPostCondition(long postId) {
+        Post post = new Post();
+        post.setPostId(postId);
+        post.setTitle("title_" + postId);
+        post.setAuthor("author_" + postId);
+        post.setContent("content_" + postId);
+        return post;
+    }
+
+    @Cacheable(value = CACHE_KEY, key = "T(com.rest.api.cache.CustomKeyGenerator).create(#postId, #title)")
+    public Post getPostKeyGenerator(long postId, String title) {
+        Post post = new Post();
+        post.setPostId(postId);
+        post.setTitle("title_" + postId);
+        post.setAuthor("author_" + postId);
+        post.setContent("content_" + postId);
+        return post;
+    }
+}

src/test/java/com/rest/api/cache/CacheTest.java

@@ -0,0 +1,67 @@
+package com.rest.api.cache;
+
+import com.rest.api.entity.board.Post;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import static org.junit.Assert.*;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class CacheTest {
+
+    @Autowired
+    private CacheRepo cacheRepo;
+
+    @Test
+    public void cacheTest() throws Exception {
+        // get cache
+        Post post = cacheRepo.getPost(1L);
+        assertSame(1L, post.getPostId());
+        assertEquals("title_1", post.getTitle());
+        // update cache
+        post.setTitle("title_modified");
+        post.setContent("content_modified");
+        cacheRepo.updatePost(post);
+        // get cache
+        Post postModified = cacheRepo.getPost(1L);
+        assertEquals("title_modified", postModified.getTitle());
+        assertEquals("content_modified", postModified.getContent());
+    }
+
+    @Test
+    public void cacheTestMultiKey() throws Exception {
+        // get cache
+        Post post = cacheRepo.getPostMultiKey(1L, "title_1");
+        assertSame(1L, post.getPostId());
+        assertEquals("title_1", post.getTitle());
+        // update cache
+        post.setTitle("title_modified");
+        post.setContent("content_modified");
+        cacheRepo.updatePostMultiKey(post);
+        // get cache
+        Post postModified = cacheRepo.getPostMultiKey(1L, "title_modified");
+        assertEquals("title_modified", postModified.getTitle());
+        assertEquals("content_modified", postModified.getContent());
+    }
+
+    @Test
+    public void cacheTestCustomKeyGenerator() throws Exception {
+        // get cache
+        Post post = cacheRepo.getPostKeyGenerator(1L, "title_1");
+        assertSame(1L, post.getPostId());
+        assertEquals("title_1", post.getTitle());
+    }
+
+    @Test
+    public void deleteAllCache() {
+        cacheRepo.getPost(1L);
+        cacheRepo.getPost(2L);
+        cacheRepo.getPost(3L);
+        cacheRepo.getPost(4L);
+        cacheRepo.clearCache();
+    }
+}

src/test/java/com/rest/api/cache/CustomKeyGenerator.java

@@ -0,0 +1,7 @@
+package com.rest.api.cache;
+
+public class CustomKeyGenerator {
+    public static Object create(Object o1, Object o2) {
+        return "FRONT:" + o1 + ":" + o2;
+    }
+}