BAEL-6036: Enable caching on the TasksService for Lightrun Article (#13221)

lightrun/tasks-service/pom.xml

@@ -24,6 +24,10 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-artemis</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-cache</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-data-jpa</artifactId>

lightrun/tasks-service/src/main/java/com/baeldung/tasksservice/SimpleCacheCustomizer.java

@@ -0,0 +1,16 @@
+package com.baeldung.tasksservice;
+
+import java.util.List;
+
+import org.springframework.boot.autoconfigure.cache.CacheManagerCustomizer;
+import org.springframework.cache.concurrent.ConcurrentMapCacheManager;
+import org.springframework.stereotype.Component;
+
+@Component
+public class SimpleCacheCustomizer implements CacheManagerCustomizer<ConcurrentMapCacheManager> {
+
+    @Override
+    public void customize(ConcurrentMapCacheManager cacheManager) {
+        cacheManager.setCacheNames(List.of("tasks"));
+    }
+}

lightrun/tasks-service/src/main/java/com/baeldung/tasksservice/TasksServiceApplication.java

@@ -2,8 +2,10 @@ package com.baeldung.tasksservice;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cache.annotation.EnableCaching;
 
 @SpringBootApplication
+@EnableCaching
 public class TasksServiceApplication {
 
     public static void main(String[] args) {

lightrun/tasks-service/src/main/java/com/baeldung/tasksservice/service/TasksService.java

@@ -19,6 +19,7 @@ import java.util.UUID;
 import javax.transaction.Transactional;
 
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.cache.annotation.Cacheable;
 import org.springframework.stereotype.Service;
 
 import com.baeldung.tasksservice.adapters.repository.TaskRecord;
@@ -29,6 +30,7 @@ public class TasksService {
     @Autowired
     private TasksRepository tasksRepository;
 
+    @Cacheable("tasks")
     public TaskRecord getTaskById(String id) {
         return tasksRepository.findById(id)
             .orElseThrow(() -> new UnknownTaskException(id));