diff --git a/pom.xml b/pom.xml
index 27fb9a6bd..b9c62ccf7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -18,7 +18,7 @@
   <properties>
 
     <!-- Generic properties -->
-    <java.version>17</java.version>
+    <java.version>21</java.version>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     <!-- Important for reproducible builds. Update using e.g. ./mvnw versions:set
@@ -71,6 +71,10 @@
       <artifactId>spring-boot-starter-test</artifactId>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter-aop</artifactId>
+    </dependency>
     <dependency>
       <!-- Workaround for AOT issue (https://github.com/spring-projects/spring-framework/pull/33949) -->
       <groupId>io.projectreactor</groupId>
diff --git a/src/main/java/org/springframework/samples/petclinic/LoggingAspect.java b/src/main/java/org/springframework/samples/petclinic/LoggingAspect.java
new file mode 100644
index 000000000..081e2c257
--- /dev/null
+++ b/src/main/java/org/springframework/samples/petclinic/LoggingAspect.java
@@ -0,0 +1,44 @@
+package org.springframework.samples.petclinic;
+
+import org.aspectj.lang.ProceedingJoinPoint;
+import org.aspectj.lang.annotation.Around;
+import org.aspectj.lang.annotation.Aspect;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Component;
+
+import java.util.function.BiFunction;
+import java.util.function.Supplier;
+
+@Aspect
+@Component
+public class LoggingAspect {
+    
+    private static final Logger logger = LoggerFactory.getLogger(LoggingAspect.class);
+
+    @FunctionalInterface
+    private interface MethodLogger {
+        void log(String className, String methodName, long executionTime);
+    }
+
+    private final MethodLogger defaultLogger = (className, methodName, executionTime) -> 
+        logger.info("Method {}.{} completed in {} ms", className, methodName, executionTime);
+
+    @Around("execution(* org.springframework.samples.petclinic..*.*(..))")
+    public Object logMethodExecution(ProceedingJoinPoint joinPoint) throws Throwable {
+        String methodName = joinPoint.getSignature().getName();
+        String className = joinPoint.getTarget().getClass().getSimpleName();
+        
+        Supplier<String> methodInfo = () -> String.format("%s.%s", className, methodName);
+        logger.info("Starting method: {}", methodInfo.get());
+        
+        long startTime = System.currentTimeMillis();
+        try {
+            Object result = joinPoint.proceed();
+            return result;
+        } finally {
+            long executionTime = System.currentTimeMillis() - startTime;
+            defaultLogger.log(className, methodName, executionTime);
+        }
+    }
+}
diff --git a/src/main/java/org/springframework/samples/petclinic/cache/CacheConfig.java b/src/main/java/org/springframework/samples/petclinic/cache/CacheConfig.java
new file mode 100644
index 000000000..f5e22317e
--- /dev/null
+++ b/src/main/java/org/springframework/samples/petclinic/cache/CacheConfig.java
@@ -0,0 +1,19 @@
+package org.springframework.samples.petclinic.cache;
+
+import org.springframework.cache.CacheManager;
+import org.springframework.cache.annotation.EnableCaching;
+import org.springframework.cache.concurrent.ConcurrentMapCacheManager;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@EnableCaching
+public class CacheConfig {
+    
+    @Bean
+    public CacheManager cacheManager() {
+        ConcurrentMapCacheManager cacheManager = new ConcurrentMapCacheManager();
+        cacheManager.setCacheNames(java.util.Arrays.asList("dataCache"));
+        return cacheManager;
+    }
+} 
\ No newline at end of file
diff --git a/src/main/java/org/springframework/samples/petclinic/cache/CacheableService.java b/src/main/java/org/springframework/samples/petclinic/cache/CacheableService.java
new file mode 100644
index 000000000..d91276a11
--- /dev/null
+++ b/src/main/java/org/springframework/samples/petclinic/cache/CacheableService.java
@@ -0,0 +1,36 @@
+package org.springframework.samples.petclinic.cache;
+
+import org.springframework.cache.annotation.Cacheable;
+import org.springframework.stereotype.Service;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.concurrent.TimeUnit;
+
+@Service
+public class CacheableService {
+    
+    private final Map<String, String> dataStore = new HashMap<>();
+    
+    public CacheableService() {
+        // Инициализация тестовых данных
+        dataStore.put("key1", "value1");
+        dataStore.put("key2", "value2");
+        dataStore.put("key3", "value3");
+    }
+    
+    @Cacheable(value = "dataCache", key = "#key")
+    public String getData(String key) {
+        // Имитация задержки при получении данных
+        try {
+            TimeUnit.MILLISECONDS.sleep(100);
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+        }
+        return dataStore.get(key);
+    }
+    
+    public void updateData(String key, String value) {
+        dataStore.put(key, value);
+    }
+} 
\ No newline at end of file
diff --git a/src/main/java/org/springframework/samples/petclinic/owner/Visit.java b/src/main/java/org/springframework/samples/petclinic/owner/Visit.java
index 35569bdaa..3e0873748 100644
--- a/src/main/java/org/springframework/samples/petclinic/owner/Visit.java
+++ b/src/main/java/org/springframework/samples/petclinic/owner/Visit.java
@@ -15,15 +15,14 @@
  */
 package org.springframework.samples.petclinic.owner;
 
-import java.time.LocalDate;
-
-import org.springframework.format.annotation.DateTimeFormat;
-import org.springframework.samples.petclinic.model.BaseEntity;
-
 import jakarta.persistence.Column;
 import jakarta.persistence.Entity;
 import jakarta.persistence.Table;
 import jakarta.validation.constraints.NotBlank;
+import org.springframework.format.annotation.DateTimeFormat;
+import org.springframework.samples.petclinic.model.BaseEntity;
+
+import java.time.LocalDate;
 
 /**
  * Simple JavaBean domain object representing a visit.
diff --git a/src/test/java/org/springframework/samples/petclinic/LoggingAspectTest.java b/src/test/java/org/springframework/samples/petclinic/LoggingAspectTest.java
new file mode 100644
index 000000000..a0d49bf51
--- /dev/null
+++ b/src/test/java/org/springframework/samples/petclinic/LoggingAspectTest.java
@@ -0,0 +1,48 @@
+package org.springframework.samples.petclinic;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
+import org.slf4j.Logger;
+import org.springframework.test.context.junit.jupiter.SpringExtension;
+import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;
+
+import static org.mockito.Mockito.*;
+
+@ExtendWith({SpringExtension.class, MockitoExtension.class})
+@SpringJUnitConfig
+public class LoggingAspectTest {
+
+    @Mock
+    private Logger logger;
+
+    @InjectMocks
+    private LoggingAspect loggingAspect;
+
+    @Test
+    public void testLogMethodExecution() throws Throwable {
+        // Создаем тестовый метод для проверки
+        TestService testService = new TestService();
+        
+        // Вызываем метод, который должен быть перехвачен аспектом
+        testService.testMethod();
+        
+        // Проверяем, что логирование было вызвано
+        verify(logger, atLeastOnce()).info(contains("Starting method:"));
+        verify(logger, atLeastOnce()).info(contains("Method TestService.testMethod completed in"));
+    }
+
+    // Вспомогательный класс для тестирования
+    private static class TestService {
+        public void testMethod() {
+            // Простой метод для тестирования
+            try {
+                Thread.sleep(100); // Имитируем некоторую работу
+            } catch (InterruptedException e) {
+                Thread.currentThread().interrupt();
+            }
+        }
+    }
+} 
\ No newline at end of file
diff --git a/src/test/java/org/springframework/samples/petclinic/cache/CacheableServiceTest.java b/src/test/java/org/springframework/samples/petclinic/cache/CacheableServiceTest.java
new file mode 100644
index 000000000..5e537a8bc
--- /dev/null
+++ b/src/test/java/org/springframework/samples/petclinic/cache/CacheableServiceTest.java
@@ -0,0 +1,55 @@
+package org.springframework.samples.petclinic.cache;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.cache.CacheManager;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+@SpringBootTest
+public class CacheableServiceTest {
+
+    @Autowired
+    private CacheableService cacheableService;
+    
+    @Autowired
+    private CacheManager cacheManager;
+
+    @Test
+    public void testCacheHit() {
+        // Первый вызов - кэш промах
+        long startTime1 = System.currentTimeMillis();
+        String result1 = cacheableService.getData("key1");
+        long duration1 = System.currentTimeMillis() - startTime1;
+        
+        // Второй вызов - должен быть кэш хит
+        long startTime2 = System.currentTimeMillis();
+        String result2 = cacheableService.getData("key1");
+        long duration2 = System.currentTimeMillis() - startTime2;
+        
+        // Проверяем результаты
+        assertEquals("value1", result1);
+        assertEquals("value1", result2);
+        
+        // Второй вызов должен быть быстрее из-за кэширования
+        assertTrue(duration2 < duration1);
+    }
+    
+    @Test
+    public void testCacheMiss() {
+        // Проверяем несуществующий ключ
+        String result = cacheableService.getData("nonExistentKey");
+        assertNull(result);
+    }
+    
+    @Test
+    public void testCacheUpdate() {
+        // Обновляем значение
+        cacheableService.updateData("key1", "newValue");
+        
+        // Получаем обновленное значение
+        String result = cacheableService.getData("key1");
+        assertEquals("newValue", result);
+    }
+} 
\ No newline at end of file