spring源码分析之cache demo

spring提供了对echache、guava、jcache的支持，先看一个echache的示例：

import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.ehcache.EhCacheCacheManager;
import org.springframework.cache.ehcache.EhCacheManagerFactoryBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.ClassPathResource;

@Configuration
@EnableCaching
@ComponentScan({ "com.mkyong.*" })
public class AppConfig {

@Bean
public CacheManager cacheManager() {
return new EhCacheCacheManager(ehCacheCacheManager().getObject());
}

@Bean
public EhCacheManagerFactoryBean ehCacheCacheManager() {
EhCacheManagerFactoryBean cmfb = new EhCacheManagerFactoryBean();
cmfb.setConfigLocation(new ClassPathResource("ehcache.xml"));
cmfb.setShared(true);

return cmfb;
}

/*@Bean
public CacheManager defaultCacheManager() {
return new ConcurrentMapCacheManager("books");
}*/

}

其中 echache.xml文件如下：

<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="ehcache.xsd" updateCheck="true"
monitoring="autodetect" dynamicConfig="true">

<!-- <diskStore path="java.io.tmpdir" /> -->
<diskStore path="c:\\cache" />

<cache name="movieFindCache"
maxEntriesLocalHeap="10000"
maxEntriesLocalDisk="1000"
eternal="false"
diskSpoolBufferSizeMB="20"
timeToIdleSeconds="300" timeToLiveSeconds="600"
memoryStoreEvictionPolicy="LFU"
transactionalMode="off">
<persistence strategy="localTempSwap" />
</cache>

</ehcache>

缓存的使用：

@Repository("movieDao")
public class MovieDaoImpl implements MovieDao{

@Cacheable(value="movieFindCache", key="#name")
public Movie findByDirector(String name) {
slowQuery(2000L);
System.out.println("findByDirector is running...");
return new Movie(1,"Forrest Gump","Robert Zemeckis");
}

private void slowQuery(long seconds){
try {
Thread.sleep(seconds);
} catch (InterruptedException e) {
throw new IllegalStateException(e);
}
}

}

参考文献：

【1】http://www.mkyong.com/spring/spring-caching-and-ehcache-example/