Spring Cache

1) add the following configurations to support cache

refer to : http://static.springsource.org/spring/docs/3.1.0.M1/spring-framework-reference/html/cache.html


<cache:annotation-driven cache-manager="cacheManager" />
<bean id="cacheManager" class="org.springframework.cache.ehcache.EhCacheCacheManager"
p:cache-manager-ref="ehcache" />
         <!-- use ehcache here  -->
<bean id="ehcache"
class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean"
p:config-location="classpath:ehcache.xml" />

2) ehcache.xml   (refer to http://ehcache.org/documentation )


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

<cache name="userCache" maxElementsInMemory="100" eternal="false"
timeToIdleSeconds="60" timeToLiveSeconds="60" overflowToDisk="false"
maxElementsOnDisk="10000000" />

</ehcache>

it is configured to refresh the content of cache per 60 seconds

3) add annotation @Cacheable(value = "userCache") to enable cache

@Transactional

public interface AccountService {

@Transactional(propagation = Propagation.SUPPORTS, readOnly = true)

@Cacheable(value = "userCache")

public List<Account> getAccounts();

@Cacheable(value = "userCache")

public List<Account> getAccounts(int currPageNo,int pageSize);

@CacheEvict (value = "userCache", allEntries=true)

public void addAccount(String userId,String password);

@CacheEvict (value = "userCache", allEntries=true)

public void addAccounts(List<Account> accounts) throws DataAccessException ;

@CacheEvict (value = "userCache", allEntries=true)

public void updateAccount(Account account);

@Cacheable(value = "userCache")

public Account getAccount(String userId);

@CacheEvict (value = "userCache", allEntries=true)

public void deleteAccount(String userId);

@CacheEvict (value = "userCache", allEntries=true)

public void updateAccount(String userId,int status);

}

4) add maven dependency

refer to : http://code.google.com/p/ehcache-spring-annotations/

<dependency>
  <groupId>com.googlecode.ehcache-spring-annotations</groupId>
  <artifactId>ehcache-spring-annotations</artifactId>
  <version>1.2.0</version>
</dependency>