News

This week The apache Ignite book becomes one of the top books of leanpub

This week The apache Ignite book becomes one of the top books of leanpub.

Tuesday

Configure Oracle Coherence as a second level(L2) cache

It's republish of my blog from another domain. The post was published at May 13 2008.
A few weeks before Oracle corporation bought company tangosol, which have a caching framework for enterprise application. Coherence might be used as a second level cache or as Cache store in any enterprise solution. How to use coherence as a Cache store would be found in the following URL:http://www.oracle.com/technology/pub/articles/vohra-coherence.html  . In the current blog we will configure a coherence L2 cache using Hibernate (Hibernate - a well known ORM framework).

First, download oracle Coherence from the following URL http://www.oracle.com/technology/software/products/ias/htdocs/coherence.html

Using Coherence as L2 cache we only need 3 libraries out of others: coherence.jar, coherence-hibernate.jar, tangosol.jar.

Install them in local maven2 repositories. Now we have to configure hibernate.cfg.xml which should be in application classPath as follows:

By default Coherence will use configuration from coherence-hibernate.jar/coherence-config.xml. We may override the configuration by providing a new configuration file relaid in classpath named coherence-cache-config.xml. A simple coherence-cache-config provide in the following:

If logging is enable for the application, we would see log messages as follows:
2008-05-12 10:56:19,079 INFO [org.hibernate.cfg.SettingsFactory] -
2008-05-12 10:56:19,079 INFO [org.hibernate.cfg.SettingsFactory] -
2008-05-12 10:56:19,079 INFO [org.hibernate.cfg.SettingsFactory] -
2008-05-12 10:56:19,266 INFO [org.hibernate.cfg.SettingsFactory] -
2008-05-12 10:56:19,266 INFO [org.hibernate.cfg.SettingsFactory] -
2008-05-12 10:56:19,266 INFO [org.hibernate.cfg.SettingsFactory] -
2008-05-12 10:56:19,282 INFO [org.hibernate.cfg.SettingsFactory] -
2008-05-12 10:56:19,282 INFO [org.hibernate.cfg.SettingsFactory] -
2008-05-12 10:56:19,282 INFO [org.hibernate.cfg.SettingsFactory] -
2008-05-12 10:56:19,282 INFO [org.hibernate.cfg.SettingsFactory] -
2008-05-12 10:56:19,282 INFO [org.hibernate.cfg.SettingsFactory] -
2008-05-12 10:56:19,329 INFO [org.hibernate.impl.SessionFactoryImpl] -
2008-05-12 10:56:19.547 Oracle Coherence 3.3.1/389 (thread=main, member=n/a): Loaded operational configuration from resource "jar:file:/C:/Documents%20and%20Settings/sahmed/.m2/repository/com/tangosol/coherence/coherence/1.0/coherence-1.0.jar!/tangosol-coherence.xml"
2008-05-12 10:56:19.547 Oracle Coherence 3.3.1/389 (thread=main, member=n/a): Loaded operational overrides from resource "jar:file:/C:/Documents%20and%20Settings/sahmed/.m2/repository/com/tangosol/coherence/coherence/1.0/coherence-1.0.jar!/tangosol-coherence-override-dev.xml"
2008-05-12 10:56:19.547 Oracle Coherence 3.3.1/389 (thread=main, member=n/a): Optional configuration override "/tangosol-coherence-override.xml" is not specified

Oracle Coherence Version 3.3.1/389
Grid Edition: Development mode
Copyright (c) 2000-2007 Oracle. All rights reserved.

2008-05-12 10:56:20.954 Oracle Coherence GE 3.3.1/389 (thread=Cluster, member=n/a): Service Cluster joined the cluster with senior service member n/a
2008-05-12 10:56:24.204 Oracle Coherence GE 3.3.1/389 (thread=Cluster, member=n/a): Created a new cluster with Member(Id=1, Timestamp=2008-05-12 10:56:20.625, Address=172.24.11.226:8088, MachineId=49122, Location=process:3396@s-ahmed, Edition=Grid Edition, Mode=Development, CpuCount=2, SocketCount=1) UID=0xAC180BE200000119DBEA6091BFE21F98
2008-05-12 10:56:24.250 Oracle Coherence GE 3.3.1/389 (thread=main, member=1): Loaded cache configuration from resource "jar:file:/C:/Documents%20and%20Settings/sahmed/.m2/repository/com/tangosol/coherence/hibernate/coherence-hibernate/1.0/coherence-hibernate-1.0.jar!/config/hibernate-cache-config.xml"
2008-05-12 10:56:24.532 Oracle Coherence GE 3.3.1/389 (thread=ReplicatedCache:HibernateReplicatedCache, member=1): Service HibernateReplicatedCache joined the cluster with senior service member 1
2008-05-12 10:56:25,000 INFO [org.hibernate.impl.SessionFactoryObjectFactory] -
2008-05-12 10:56:25,016 INFO [org.hibernate.cache.UpdateTimestampsCache] -
2008-05-12 10:56:25,016 INFO [org.hibernate.cache.StandardQueryCache] -
2008-05-12 10:56:25.157 Oracle Coherence GE 3.3.1/389 (thread=main, member=1): Loaded cache configuration from resource "file:/E:/WorkSpace/MyProjects/Coherence/coherence-test/target/classes/coherence-cache-config.xml"
entity cache items:SafeNamedCache: CacheHandler

A much more configurations detailed in the user guide.

3 comments :

Anonymous said...

Cool post as for me. It would be great to read more concerning that matter. Thnx for sharing this material.

Anonymous said...

Nice brief and this mail helped me alot in my college assignement. Gratefulness you on your information.

Anonymous said...

You have really great taste on catch article titles, even when you are not interested in this topic you push to read it