Cache never populated with @Cacheable

**Fishbeast** · Jan 21st, 2013, 01:17 AM

Hi,

I'm trying to apply caching on my DAO methods for a REST Web application
I have a simple configuration and I am using Spring 3.2, EhCache-core 2.6.3, Hibernate 4 and MySQL.
i've tried Tomcat 6 and Tomcat 7 as servletcontainer to run the webapp.

api-servlet.xml:

Code:

<?xml version="1.0" encoding="UTF-8"?>
<beans ...">
	<context:component-scan base-package="nl.bla.api." >
		<context:include-filter type="aspectj" expression="nl.bla.api..controller"/>
	</context:component-scan>
	<mvc:annotation-driven >
		<mvc:argument-resolvers>
			<bean class="nl.kerken.api.web.support.RequestEntityMethodArgumentResolver" />
		</mvc:argument-resolvers>
	</mvc:annotation-driven>
	<mvc:interceptors>
		<bean class="org.springframework.orm.hibernate4.support.OpenSessionInViewInterceptor">
			<property name="sessionFactory" ref="sessionFactory" />
		</bean>
	</mvc:interceptors>
	
</beans>

context.xml

Code:

<?xml version="1.0" encoding="UTF-8"?>
<beans ...>
	<context:component-scan base-package="nl.bla.api" >
 		<context:include-filter type="aspectj" expression="nl.bla.api..dao"/>
 		<context:include-filter type="aspectj" expression="nl.bla.api.location"/>
	</context:component-scan>
	<cache:annotation-driven/>
	<bean id="cacheManager" class="org.springframework.cache.ehcache.EhCacheCacheManager">
		<property name="cacheManager" ref="ehcache" />
	</bean>
	<bean id="ehcache" class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean">
		<property name="configLocation" value="classpath:ehcache.xml"/>
	</bean>

</beans>

database.xml:

Code:

<?xml version="1.0" encoding="UTF-8"?>
<beans ...>

	<!-- enable @transactional scanning -->
	<tx:annotation-driven/>

	<!-- datasource -->
	<bean id="datasource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
		<property name="driverClass" value="com.mysql.jdbc.Driver"/>
		<property name="jdbcUrl" value="${jdbc.url}"/>
		<property name="user" value="${jdbc.username}"/>
		<property name="password" value="${jdbc.password}"/>			
		<property name="minPoolSize" value="1"/>
		<property name="maxPoolSize" value="5"/>
		<property name="idleConnectionTestPeriod" value="360"/>
	</bean>

	<!-- hibernate sessionFactory -->
	<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
		<property name="dataSource" ref="datasource" />
		<property name="packagesToScan" value="nl.bla.api.domain" />
		<property name="hibernateProperties">
			<props>
				<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
				<prop key="hibernate.connection.zeroDateTimeBehavior">convertToNull</prop>
			</props>
		</property>
	</bean>
	
	<!-- hibernate transactionmanager -->
	<bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
		<property name="sessionFactory" ref="sessionFactory" />
	</bean>
	
	
	<beans profile="test">
		<context:property-placeholder location="<some_props_location>"/>
	</beans>
	
	<beans profile="auke">
		<context:property-placeholder location="<some_props_location>" />
	</beans>
	
	
</beans>

ehache.xml:

Code:

<?xml version="1.0" encoding="UTF-8"?>
<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:noNamespaceSchemaLocation="http://ehcache.org/ehcache.xsd"
	updateCheck="false">

	<diskStore path="java.io.tmpdir/kerken_nl" />

	<defaultCache eternal="false" maxElementsInMemory="1000"
		overflowToDisk="false" diskPersistent="false" timeToIdleSeconds="0"
		timeToLiveSeconds="600" memoryStoreEvictionPolicy="LRU" />
	<cache name="byId" maxElementsInMemory="10000"
			eternal="false"
			overflowToDisk="false"
			timeToIdleSeconds="300"
			timeToLiveSeconds="600" />
</ehcache>

an exerpt from the DAO with @Cacheable annotated method:

Code:

@Repository
public class BaseDao<T extends DatabaseEntity> {

	private Logger logger = LoggerFactory.getLogger(getClass());
	
	private SessionFactory sessionFactory;

	public BaseDao() {
	}

	@SuppressWarnings("unchecked")
	@Transactional(readOnly = true)
	@Cacheable(value="byId")
	public T getById(Class<T> clazz, int id) {
		return (T) getCurrentSession().get(clazz, id);
	}

The context and database.xml are used as context-param for the ContextLoaderListener.

When setting the logging to DEBUG for net.sf.ehcache and org.springframework.cache, I can see that the caches are initialized, but I never see the log statements saying that objects are stored in the cache or retrieved from the cache.

I've made a test-app that has 1 bean, with a method annotated with @Cacheable:

Code:

package nl.noppe.cache;

import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;

@Service
public class CachedBean {

	@Cacheable("cache")
	public String getCachedValue(Class<?> clazz) {
		System.out.println("no cache " + clazz.getName());
		return "hello " + clazz.getName();
	}
}

The main class:

Code:

package nl.noppe.cache;


import java.util.List;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class CacheTest {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		ApplicationContext context = new ClassPathXmlApplicationContext("classpath:/context.xml");
		System.out.println(context.getBeanNamesForType(CachedBean.class).length);
		CachedBean cachedBean = context.getBean(CachedBean.class);
		
		System.out.println(cachedBean.getCachedValue(String.class));
		System.out.println(cachedBean.getCachedValue(List.class));
		System.out.println(cachedBean.getCachedValue(String.class));
		System.out.println(cachedBean.getCachedValue(List.class));
			
	}

}

context.xml:

Code:

<?xml version="1.0" encoding="UTF-8"?>
<beans ...>

	<context:component-scan base-package="nl.noppe.cache" />
	
	<cache:annotation-driven/>
	
	<bean id="cacheManager" class="org.springframework.cache.ehcache.EhCacheCacheManager">
		<property name="cacheManager" ref="ehcache" />
	</bean>
	
	<bean id="ehcache" class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean">
		<property name="configLocation" value="classpath:ehcache.xml"/>
	</bean>

</beans>

output:

Code:

2013-01-21 08:11:09,377 DEBUG [org.springframework.cache.annotation.AnnotationCacheOperationSource:108] Adding cacheable method 'getCachedValue' with attribute: [CacheableOperation[public java.lang.String nl.noppe.cache.CachedBean.getCachedValue(java.lang.Class)] caches=[cache] | condition='' | key='']
2013-01-21 08:11:09,440 INFO  [org.springframework.cache.ehcache.EhCacheManagerFactoryBean:100] Initializing EHCache CacheManager
2013-01-21 08:11:09,456 DEBUG [net.sf.ehcache.config.ConfigurationFactory:150] Configuring ehcache from InputStream
2013-01-21 08:11:09,469 DEBUG [net.sf.ehcache.config.BeanHandler:271] Ignoring ehcache attribute xmlns:xsi
2013-01-21 08:11:09,469 DEBUG [net.sf.ehcache.config.BeanHandler:271] Ignoring ehcache attribute xsi:noNamespaceSchemaLocation
2013-01-21 08:11:09,471 DEBUG [net.sf.ehcache.config.DiskStoreConfiguration:141] Disk Store Path: /var/folders/bk/pq3_0vsn4d50k8dk868ld7mh0000gn/T/cachetest
2013-01-21 08:11:09,485 DEBUG [net.sf.ehcache.util.PropertyUtil:88] propertiesString is null.
2013-01-21 08:11:09,495 DEBUG [net.sf.ehcache.config.ConfigurationHelper:185] No CacheManagerEventListenerFactory class specified. Skipping...
2013-01-21 08:11:09,545 DEBUG [net.sf.ehcache.Cache:954] No BootstrapCacheLoaderFactory class specified. Skipping...
2013-01-21 08:11:09,546 DEBUG [net.sf.ehcache.Cache:928] CacheWriter factory not configured. Skipping...
2013-01-21 08:11:09,547 DEBUG [net.sf.ehcache.config.ConfigurationHelper:96] No CacheExceptionHandlerFactory class specified. Skipping...
2013-01-21 08:11:09,552 DEBUG [net.sf.ehcache.Cache:954] No BootstrapCacheLoaderFactory class specified. Skipping...
2013-01-21 08:11:09,552 DEBUG [net.sf.ehcache.Cache:928] CacheWriter factory not configured. Skipping...
2013-01-21 08:11:09,554 DEBUG [net.sf.ehcache.config.ConfigurationHelper:96] No CacheExceptionHandlerFactory class specified. Skipping...
2013-01-21 08:11:09,571 DEBUG [net.sf.ehcache.store.MemoryStore:149] Initialized net.sf.ehcache.store.NotifyingMemoryStore for cache
2013-01-21 08:11:09,578 DEBUG [net.sf.ehcache.Cache:1164] Initialised cache: cache
2013-01-21 08:11:09,578 DEBUG [net.sf.ehcache.config.ConfigurationHelper:325] CacheDecoratorFactory not configured. Skipping for 'cache'.
2013-01-21 08:11:09,579 DEBUG [net.sf.ehcache.config.ConfigurationHelper:354] CacheDecoratorFactory not configured for defaultCache. Skipping for 'cache'.
1
no cache java.lang.String
hello java.lang.String
no cache java.util.List
hello java.util.List
hello java.lang.String
hello java.util.List

you can see that it works, because the sysout 'no cache' + classname is not called for the 3-5 method call.

what am i doing wrong?

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