oscache « Cache « JPA Q&A





1. When to go for Caching/Second level cache? Any practical scenario with specifics?    stackoverflow.com

I'm working on a web based application that belongs to an automobil manufacturer, developed in Spring-Hibernate with MS SQL Server 2005 database. Through this application, end users can request for creating ...

2. Specifying global EhCache capacity    stackoverflow.com

I am trying to migrate my project code from OSCache to EhCache. We have used OSCache not only as a second-level Hibernate cache provider but also to store other objects of a ...

3. ClassNotFoundException in OSCache 2.4 w/ JGroups and Java 6    forum.hibernate.org

We have been getting this aweful exception ever since we upgrade our JVM to Java 6. We are using Tomcat 5.5.23, and Redhat 4.5. The exception that occurs when our Spring/Hibernate based webapp starts up is: Code: ChannelException: failed loading class: java.lang.ClassNotFoundException: [Lorg.jgroups.Address; at org.jgroups.conf.ClassConfigurator.init(ClassConfigurator.java:94) at org.jgroups.conf.ClassConfigurator.getInstance(ClassConfigurator.java:114) at org.jgroups.stack.ProtocolStack.(ProtocolStack.java:51) ...

4. Regions with OSCache    forum.hibernate.org

In looking through the various caching options available, I noticed that OSCache does not specify multiple cache regions like JCS or ehcache do. Then, in looking through the mail archives, I found this post from Gavin: Quote: It looks like this is not possible with oscache, or swarmcache, so what I would suggest is that we adopt a convention where oscache-foo.Bar.properties ...

5. oscache and hibernate    forum.hibernate.org

I've brought up hibernate using oscache and I'm having a hard time getting it to work within a cluster using the JavaGroups listener. My cached data is never being invalidated between VMs and I think, from what I describe below, that they aren't registering with each other in the broadcast group. Here's what I'm seeing (or not seeing): If I start ...

6. problem about OSCache and SwarmCache    forum.hibernate.org

I want to use SwarmCache to cache object and use OSCache to cache presentation level. but hibernate reference is little about them. I following the readme of hibernate-swarmcache.jar, and use instead of . the db operation did not work and with no error infomation. JSP page would pending ... Anybody can give a total sample about how to ...

7. difference between EHCache and OSCache    forum.hibernate.org

8. OSCache 2.0 with Hibernate in a Cluster    forum.hibernate.org

9. Clustering OSCache    forum.hibernate.org





10. OSCache : could not destroy cache    forum.hibernate.org

12:51:47,832 WARN ReadWriteCache:218 - could not destroy cache java.lang.NullPointerException at com.opensymphony.oscache.base.AbstractCacheAdministrator.finalizeListeners(AbstractCacheAdministrator.java:323) at com.opensymphony.oscache.general.GeneralCacheAdministrator.destroy(GeneralCacheAdministrator.java:168) at net.sf.hibernate.cache.OSCache.destroy(OSCache.java:59) at net.sf.hibernate.cache.ReadWriteCache.destroy(ReadWriteCache.java:215) at net.sf.hibernate.impl.SessionFactoryImpl.close(SessionFactoryImpl.java:542)

11. Still have problems with OSCache    forum.hibernate.org

Hi I posted a thread here last week http://forum.hibernate.org/viewtopic.php?t=932268&highlight=, but with no response. I'll try again; To make my problem short: I'm working with an object A with a initialized set of B's mapped with cascade all. When deleting an object B, my cache will invalidate the B, BUT it will not update the reference to B from A. The result ...

12. Clustered OSCache - comments?    forum.hibernate.org

Hi Folks - I've been searching for validation on whether we could reliably use oscache clustering. We're currently using hibernate 2.1.2, but will be upgrading to 2.1.4 shortly. We would like clustered invalidation, and NOT replication, since it is likely, (but not guaranteed) that data accessed on one app server will not be accessed on another app server. (Using replication would ...

13. why I can't use oscache in hibernate?    forum.hibernate.org

14:02:36,084 INFO SettingsFactory:128 - cache provider: net.sf.hibernate.cache. OSCacheProvider 14:02:36,144 INFO Configuration:1080 - instantiating and configuring caches 14:02:36,565 INFO SessionFactoryImpl:119 - building session factory 14:02:37,426 INFO SessionFactoryObjectFactory:82 - no JNDI name configured 14:02:37,436 INFO UpdateTimestampsCache:35 - starting update timestamps cache a t region: net.sf.hibernate.cache.UpdateTimestampsCache 14:02:37,446 INFO QueryCache:39 - starting query cache at region: net.sf.hibern ate.cache.QueryCache Hibernate: select child0_.childid as x0_0_ from child ...

14. Why oscache can't cache object?    forum.hibernate.org

public void doGet(HttpServletRequest req,HttpServletResponse resp)throws ServletException,IOException{ doPost(req,resp); } public void doPost(HttpServletRequest req,HttpServletResponse resp)throws ServletException,IOException{ List list=null; try{ TradeDAO tdao=DAOFactory.getTradeDAOInstance(); ...

15. Using OSCache in a cluster    forum.hibernate.org

Sorry, wasn't trying to belittle JBossCache. Bela, Ben, and others have been great help in getting me set up with it. But there is a need for greater invalidation flexibility and clustered invalidation instead of full replication. OsCache also has some web features that make it worthwile even though I personally don't take advantage of them. I have started to contribute ...

16. Using OSCache with Hibernate 3.0 in a clustered environment    forum.hibernate.org

Hi, we have a need for distributed cache invalidation in our app that uses Hibernate 3.0.5 and OSCache 2.1 as 2nd level cache implementation. We tried to use the JGroups support of OSCache (with JGroups 2.2.8), but encountered some serious issues with threads that wouldn't shut down anymore when we tried to stop the application server (WebSphere 5.1.1 on Windows 2003). ...





17. How to clear second-level OSCache?    forum.hibernate.org

Hi, I was wondering if there is a trick to completely clearing/flushing Hibernate's second-level cache (I am using the OSCache implementation). I am using both persistent object caching and query caching. I've been trying to completely flush out the cache, but it doesn't seem to work for the Hibernate stuff - attacking it from the OSCache API, I've been using the ...

18. Hibernate --> OSCache Not working    forum.hibernate.org

Hello: I have currently configured Hibernate to use OSCache, with the following setttings in persistence.xml: Howver, I noticed that the JDBC calls are still being made to the database after the TestClass is read into memory. Is there additional configuration that is needed in order to keep the JDBC calls from being ...

19. Problem in Implementing OSCache with Hibernate    forum.hibernate.org

Hi, I am implementing OSCache 2.4 with Hibernate 3.1 I have copied oscache.jar and commons-logging.jar files in WEB_INF/lib directory and oscache.properties file in WEB-INF/classes directory. i have also placed provider_class in hibernate config file. After running my hibernate method, i am getting following exception java.lang.ClassNotFoundException: com.opensymphony.oscache.hibernate.OSCacheProvider If anybody has implemented OSCache with hibernate, then it will be a great help for ...

20. OSCache Cluster problem    forum.hibernate.org

Hi all, I am trying to use OSCache within my Hibernate application. I want the cache to be clustered. So, I have 2 desktop applications running on different machines connected by LAN. In the first applications, i am loading an object from the database: GroupData group = (GroupData) session.get(GroupData.class, 1); Then, I run the second application on the second machine, which ...