hibernate-rediscala

hibernate (4.2.x.Final, 4.3.x.Final) 2nd level cache using redis server with rediscala 1.3.

rediscala use akka which provide non-blocking and asynchronous feature.

reduce cache size by Fast-Serialization and snappy-java. thanks!

Maven Repository

add dependency

<dependency>
    <groupId>com.github.debop</groupId>
    <artifactId>hibernate-rediscala</artifactId>
    <version>1.1.2</version>
</dependency>

add repository

<repositories>
    <repository>
        <id>debop-releases-bintray</id>
        <url>http://dl.bintray.com/debop/maven</url>
    </repository>
</repositories>

setup hibernate configuration

setup hibernate configuration.

// Secondary Cache
props.setProperty(AvailableSettings.USE_SECOND_LEVEL_CACHE, "true")
props.setProperty(AvailableSettings.USE_QUERY_CACHE, "true")
props.setProperty(AvailableSettings.CACHE_REGION_FACTORY, classOf[SingletonRedisRegionFactory].getName)
props.setProperty(AvailableSettings.CACHE_REGION_PREFIX, "hibernate")
props.setProperty(AvailableSettings.GENERATE_STATISTICS, "true")
props.setProperty(AvailableSettings.USE_STRUCTURED_CACHE, "true")
props.setProperty(AvailableSettings.TRANSACTION_STRATEGY, classOf[JdbcTransactionFactory].getName)

props.setProperty(AvailableSettings.CACHE_PROVIDER_CONFIG, "hibernate-redis.properties")

also same configuration for using Spring Framework or Spring Data JPA.

redis settings for hibernate-rediscala

sample for hibernate-redis.properties

 ##########################################################
 #
 # properities for hibernate-redis
 #
 ##########################################################

 # Redis Server for hibernate 2nd cache
 redis.host=localhost
 redis.port=6379

 # redis.timeout=2000
 # redis.password=

 # database for hibernate cache
 # redis.database=0
 redis.database=1

 # hiberante 2nd cache default expiry (seconds)
 redis.expiryInSeconds=120

 # expiry of hibernate.common region (seconds) // hibernate is prefix, region name is common
 redis.expiryInSeconds.hibernate.common=0

 # expiry of hibernate.account region (seconds) // hibernate is prefix, region name is account
 redis.expiryInSeconds.hibernate.account=1200

Setup hibernate entity to use cache

add @org.hibernate.annotations.Cache annotation to Entity class like this

import javax.persistence._
import org.hibernate.annotations.CacheConcurrencyStrategy

@Entity
@org.hibernate.annotations.Cache(usage = CacheConcurrencyStrategy.READ_WRITE)
@Access(AccessType.FIELD)
@SerialVersionUID(5597936606448211014L)
class Item extends Serializable {

    @Id
    @GeneratedValue
    var id: java.lang.Long = _

    var name: String = _

    var description: String = _

}

How to monitor hibernate-cache is running

run "redis-cli monitor" command in terminal. you can see putting cached items, retrieving cached items.

Sample code

see HibernateCacheTest.java for more usage.