Merge pull request #235 from woowacourse-teams/feature/234-method-cache

#234 조회 메서드의 동일한 결과값 캐시하기

build.gradle

@@ -40,6 +40,7 @@ dependencies {
     implementation 'org.springframework.boot:spring-boot-starter-web'
     implementation 'org.springframework.boot:spring-boot-starter-validation'
     implementation 'io.jsonwebtoken:jjwt:0.9.1'
+    implementation 'org.springframework.boot:spring-boot-starter-cache'
     compileOnly 'org.projectlombok:lombok'
     runtimeOnly 'com.h2database:h2'
     runtimeOnly 'mysql:mysql-connector-java'

src/main/java/com/saebyeok/saebyeok/SaebyeokApplication.java

@@ -2,7 +2,9 @@
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cache.annotation.EnableCaching;
 
+@EnableCaching
 @SpringBootApplication
 public class SaebyeokApplication {
 

src/main/java/com/saebyeok/saebyeok/service/EmotionService.java

@@ -6,6 +6,7 @@
 import com.saebyeok.saebyeok.dto.EmotionResponse;
 import com.saebyeok.saebyeok.exception.EmotionNotFoundException;
 import lombok.RequiredArgsConstructor;
+import org.springframework.cache.annotation.Cacheable;
 import org.springframework.stereotype.Service;
 
 import java.util.List;
@@ -17,20 +18,23 @@ public class EmotionService {
 
     private final EmotionRepository emotionRepository;
 
+    @Cacheable(value = "Emotions")
     public List<EmotionResponse> getEmotions() {
         return emotionRepository.findAll().
-            stream().
+                stream().
                 map(EmotionResponse::new).
                 collect(Collectors.toList());
     }
 
+    @Cacheable(value = "EmotionDetailResponse")
     public EmotionDetailResponse readEmotion(Long emotionId) {
         Emotion emotion = emotionRepository.findById(emotionId).
                 orElseThrow(() -> new EmotionNotFoundException(emotionId));
 
         return new EmotionDetailResponse(emotion);
     }
 
+    @Cacheable(value = "AllEmotionsIds")
     public List<Long> getAllEmotionsIds() {
         return emotionRepository.findAll().
                 stream().

src/main/java/com/saebyeok/saebyeok/service/report/ReportService.java

@@ -9,6 +9,7 @@
 import com.saebyeok.saebyeok.dto.report.ReportCreateRequest;
 import com.saebyeok.saebyeok.exception.ReportCategoryNotFoundException;
 import lombok.RequiredArgsConstructor;
+import org.springframework.cache.annotation.Cacheable;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -21,6 +22,7 @@ public class ReportService {
     private final ReportCategoryRepository reportCategoryRepository;
     private final ReportRepository reportRepository;
 
+    @Cacheable(value = "ReportCategories")
     public List<ReportCategoryResponse> getReportCategories() {
         return reportCategoryRepository.findAll().
                 stream().