Caching with JCache

Spring Caching with JCache

JCache is a Java EE specification which missed the Java EE 7 train, but it is ready for Java EE 8 now.

EhCache, Infinispan etc provide implementations of JCache 1.0 specification.

Spring core provides a bridge between JCache and Spring Caching abstraction.

Enable Caching

Add @EnableCaching(mode=AdviceMode.ASPECTJ) annotation on the configuration class if you are using Java based configuration.

@Configuration
...
@EnableCaching(mode=AdviceMode.ASPECTJ)
public class JpaConfig {...}

Then, specify a CacheManager provider in your configuration. There is a JCacheCacheManager provided by Spring.

But also specify JCache will use EhCache as backend implementation.

@Override
@Bean
public CacheManager cacheManager() {
 JCacheCacheManager cacheManager = new JCacheCacheManager();
 cacheManager.setCacheManager(new JCacheManager(
   new JCacheCachingProvider(), ehcache(), null, null));
 return cacheManager;
}

private net.sf.ehcache.CacheManager ehcache() {
 return new net.sf.ehcache.CacheManager();
}

@Override
@Bean
public KeyGenerator keyGenerator() {
 return new SimpleKeyGenerator();
}

Do not forget to add the ehcache dependency in your Maven pom.xml file.

<dependency>
 <groupId>net.sf.ehcache</groupId>
 <artifactId>ehcache-core</artifactId>
</dependency>
<dependency>
 <groupId>net.sf.ehcache</groupId>
 <artifactId>jcache</artifactId>
</dependency>

Note, aslo added a Ehcache Jcache dependency.

Code sample

Check out the sample codes.

https://github.com/hantsy/spring-sandbox4

And explore the spring-cache-jcache folder.