跳至主要内容

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.
And explore the spring-cache-jcache folder.
发表评论

此博客中的热门博文

JPA 2.1: Attribute Converter

JPA 2.1: Attribute Converter If you are using Hibernate, and want a customized type is supported in your Entity class, you could have to write a custom Hibernate Type. JPA 2.1 brings a new feature named attribute converter, which can help you convert your custom class type to JPA supported type. Create an Entity Reuse thePostentity class as example. @Entity @Table(name="POSTS") public class Post implements Serializable { private static final long serialVersionUID = 1L; @Id @GeneratedValue(strategy = GenerationType.AUTO) @Column(name="ID") private Long id; @Column(name="TITLE") private String title; @Column(name="BODY") private String body; @Temporal(javax.persistence.TemporalType.DATE) @Column(name="CREATED") private Date created; @Column(name="TAGS") private List<String> tags=new ArrayList<>(); } Create an attribute converter In this example…

Spring Data Mongo: bridge MongoDB and Spring

Spring Data Mongo: bridge MongoDB and SpringMongoDBis one of the most popular NoSQL products, Spring Data Mongo(Maven archetype id is spring-data-mongodb) tries to provides a simple approach to access MongoDB. Configuration Add the following code fragments in your Spring configuration. <!-- Mongo config --> <mongo:db-factory id="mongoDbFactory" host="localhost" port="27017" dbname="conference-db" /> <bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate"> <constructor-arg ref="mongoDbFactory" /> </bean> <mongo:repositories base-package="com.hantsylabs.example.spring.mongo" /> Firstly, declare aDbFactorywhich is responsible for connecting to the MongoDB server. Then, register theMongoTemplateobject which envelop the data operations on MongoDB. Lastly addmongo:repositorieswith an essentialbase-packageattribute, Spring will discovery your d…

Auditing with Hibernate Envers

Auditing with Hibernate Envers The approaches provided in JPA lifecyle hook and Spring Data auditing only track the creation and last modification info of an Entity, but all the modification history are not tracked. Hibernate Envers fills the blank table. Since Hibernate 3.5, Envers is part of Hibernate core project. Configuration Configure Hibernate Envers in your project is very simple, just need to addhibernate-enversas project dependency. <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-envers</artifactId> </dependency> Done. No need extra Event listeners configuration as the early version. Basic Usage Hibernate Envers provides a simple@Auditedannotation, you can place it on an Entity class or property of an Entity. @Audited private String description; If@Auditedannotation is placed on a property, this property can be tracked.