Week5

build.gradle

@@ -3,6 +3,8 @@ plugins {
 	id 'java'
 }
 
+apply plugin: 'java'
+apply plugin: 'org.springframework.boot'
 apply plugin: 'io.spring.dependency-management'
 
 group = 'org.dailystudio'
@@ -20,8 +22,16 @@ repositories {
 }
 
 dependencies {
+	compile('org.springframework.boot:spring-boot-starter-cache')
+	testCompile('org.springframework.boot:spring-boot-starter-test')
+
+    implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
+    compile('com.h2database:h2')
+
+    testCompile('org.assertj:assertj-core:3.9.0')
+
 	implementation 'org.springframework.boot:spring-boot-starter-web'
-	compileOnly 'org.projectlombok:lombok'
-	annotationProcessor 'org.projectlombok:lombok'
+	compile 'org.projectlombok:lombok:+'
+	annotationProcessor 'org.projectlombok:lombok:+'
 	testImplementation 'org.springframework.boot:spring-boot-starter-test'
 }

src/main/java/org/dailystudio/springbootstudy/SpringbootstudyApplication.java

@@ -6,8 +6,8 @@
 @SpringBootApplication
 public class SpringbootstudyApplication {
 
-	public static void main(String[] args) {
-		SpringApplication.run(SpringbootstudyApplication.class, args);
-	}
+    public static void main(String[] args) {
+        SpringApplication.run(SpringbootstudyApplication.class, args);
+    }
 
 }

src/main/java/org/dailystudio/springbootstudy/config/CacheConfig.java

@@ -0,0 +1,9 @@
+package org.dailystudio.springbootstudy.config;
+
+import org.springframework.cache.annotation.EnableCaching;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@EnableCaching
+public class CacheConfig {
+}

src/main/java/org/dailystudio/springbootstudy/domain/Board.java

@@ -0,0 +1,28 @@
+package org.dailystudio.springbootstudy.domain;
+
+import lombok.NoArgsConstructor;
+
+import javax.persistence.*;
+import javax.validation.constraints.NotNull;
+
+@Entity
+@Table(name = "BOARD")
+@NoArgsConstructor
+public class Board {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column
+    @NotNull
+    private String content;
+
+    public String getContent() {
+        return content;
+    }
+
+    public Board(@NotNull String content) {
+        this.content = content;
+    }
+}

src/main/java/org/dailystudio/springbootstudy/repository/BoardRepository.java

@@ -0,0 +1,7 @@
+package org.dailystudio.springbootstudy.repository;
+
+import org.dailystudio.springbootstudy.domain.Board;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface BoardRepository extends JpaRepository<Board, Long> {
+}

src/main/java/org/dailystudio/springbootstudy/service/BoardService.java

@@ -0,0 +1,38 @@
+package org.dailystudio.springbootstudy.service;
+
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.dailystudio.springbootstudy.domain.Board;
+import org.dailystudio.springbootstudy.repository.BoardRepository;
+import org.springframework.cache.annotation.CacheEvict;
+import org.springframework.cache.annotation.Cacheable;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+@Service
+@Slf4j
+@RequiredArgsConstructor
+public class BoardService {
+
+    private final BoardRepository boardRepository;
+
+    @CacheEvict(value = "contents", allEntries = true)
+    public void saveContent(String content) {
+        Board board = new Board(content);
+        boardRepository.save(board);
+    }
+
+    @Cacheable(value = "contents")
+    public List<String> fetchContents() {
+        logCache();
+        return boardRepository.findAll().stream()
+                .map(Board::getContent)
+                .collect(Collectors.toList());
+    }
+
+    private void logCache() {
+        log.info("new cache.");
+    }
+}

src/main/resources/application.properties

@@ -1 +1,5 @@
-
+spring.h2.console.path=/h2
+spring.datasource.url=jdbc:h2:~/ds;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE
+spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
+spring.h2.console.enabled=true
+spring.jpa.hibernate.ddl-auto=create-drop

src/test/java/org/dailystudio/springbootstudy/SpringbootstudyApplicationTests.java

@@ -9,8 +9,8 @@
 @SpringBootTest
 public class SpringbootstudyApplicationTests {
 
-	@Test
-	public void contextLoads() {
-	}
+    @Test
+    public void contextLoads() {
+    }
 
 }

src/test/java/org/dailystudio/springbootstudy/service/BoardServiceTest.java

@@ -0,0 +1,57 @@
+package org.dailystudio.springbootstudy.service;
+
+import lombok.extern.slf4j.Slf4j;
+import org.junit.After;
+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 org.springframework.transaction.annotation.Transactional;
+
+import java.util.List;
+
+@Slf4j
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class BoardServiceTest {
+
+    private static final String DEFAULT_CONTENT = "default";
+
+    @Autowired
+    private BoardService boardService;
+
+    private List<String> contents;
+
+    @After
+    public void tearDown() throws Exception {
+        log.info(contents.toString());
+    }
+
+    @Test
+    public void 캐시0() {
+        boardService.saveContent(DEFAULT_CONTENT);
+        contents = boardService.fetchContents();
+    }
+
+    @Test
+    public void 캐시1() {
+        contents = boardService.fetchContents();
+    }
+
+    @Test
+    public void 캐시2() {
+        contents = boardService.fetchContents();
+    }
+
+    @Test
+    public void 캐시3() {
+        boardService.saveContent("캐시3");
+        contents = boardService.fetchContents();
+    }
+
+    @Test
+    public void 캐시4() {
+        contents = boardService.fetchContents();
+    }
+}