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/