The document discusses using various technologies like Ehcache, Hibernate, and Terracotta for distributed caching and clustering. It provides code samples and configuration for using Ehcache as a second-level cache for Hibernate, and using Terracotta to cluster the Ehcache for distributed caching across multiple servers.

1. Clustering Made Easier Using Terracotta with Hibernate and/or Ehcache Cris J. Holdorph Software Architect Unicon, Inc. Jasig Conference San Diego, CA March 9, 2010 © Copyright Unicon, Inc., 2008. Some rights reserved. This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 United States License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/us/

2. Speaker Bio Michigan State University graduate

3. Java Developer since 1997

4. Unicon Employee since 1998 Cisco Networking Academy Program

5. uPortal

6. Sakai

7. Miscellaneous Professional Services http://www.unicon.net/blog/4

8. Agenda Technologies

9. Using Ehcache

10. Using Ehcache with Terracotta

11. Using Hibernate

12. Using Hibernate with 2cd level cache

13. Terracotta Server

14. Other Considerations

15. Technologies

16. Technologies Ehcache

17. Hibernate

18. Terracotta

19. Spring Framework

20. Ehcache What is it? Generic Caching Platform www.ehcache.org Latest stable release: 1.7.2 (2.0 in beta) Acquired by Terracotta in 2009 Greg Luck, Terracotta employee, Hibernate committer Gradually increased integration with Terracotta

21. Used by both uPortal and Sakai

22. Hibernate What is it? Object Relational Mapping for Data Persistence

23. JPA implementation www.hibernate.org Latest stable release: 3.3.2 Acquired by JBoss / RedHat

24. Used by both uPortal and Sakai

25. Terracotta What is it? Distributed Caching Platform

26. Clustered Caching Platform

27. Network Attached Memory www.terracotta.org Latest stable release: 3.2.0 Supported by Terracotta Tech

28. Open Source and Commercial

29. Unicon Partner

30. Many Terracotta employees are avid Twitter users

31. Spring Framework What is it? Dependency Injection Container

32. Multipurpose Java development libraries

33. And more... www.springframework.org Latest stable release: 3.0.0 Supported by Spring Source

34. Strong integration with Ehcache, Hibernate

35. Some integration with Terracotta

36. Used by both uPortal and Sakai

37. Using Ehcache

38. Sample Application Census Collect Web Application List View (choose State to limit display)

39. Form View Census View Web Application

40. Sample Application (screenshots)

41. Sample Application (screenshots)

42. pom.xml <dependency> <groupId>net.sf.ehcache</groupId> <artifactId>ehcache-core</artifactId> <version>1.7.2</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-jdk14</artifactId> <version>1.5.8</version> </dependency>

43. ehcache.xml <ehcache> <diskStore path=&quot;java.io.tmpdir&quot; /> <defaultCache maxElementsInMemory=&quot;10&quot; eternal=&quot;false&quot; timeToIdleSeconds=&quot;120&quot; timeToLiveSeconds=&quot;300&quot; overflowToDisk=&quot;true&quot; /> <cache name=&quot;PEOPLE_CACHE&quot; maxElementsInMemory=&quot;2000&quot; eternal=&quot;false&quot; overflowToDisk=&quot;true&quot; timeToIdleSeconds=&quot;0&quot; timeToLiveSeconds=&quot;3600&quot; /> </ehcache>

44. CensusCollectServlet.java import net.sf.ehcache.Cache; import net.sf.ehcache.CacheManager; import net.sf.ehcache.Element; … private Cache peopleCache = null; … public void init(ServletConfig config) throws ServletException { super.init(config); CacheManager manager = new CacheManager(); peopleCache = manager.getCache(&quot;PEOPLE_CACHE&quot;); } ...

45. CensusCollectServlet.java ... Person person = null; Element element = peopleCache.get(ssn); if (person == null) { person = new Person(); } else { person = (Person)element.getValue(); } request.setAttribute(PERSON, person); ... peopleCache.put(new Element(ssn, person)); ...

46. Using Ehcache with RMI Replication

47. ehcache.xml <cacheManagerPeerProviderFactory class=&quot;net.sf.ehcache.distribution. RMICacheManagerPeerProviderFactory&quot; properties=&quot;hostName=fully_qualified_hostname_or_ip, peerDiscovery=automatic, multicastGroupAddress=230.0.0.1, multicastGroupPort=4446, timeToLive=32&quot;/> <cache name=&quot; PEOPLE_CACHE &quot; ...> <cacheEventListenerFactory class=&quot;net.sf.ehcache.distribution.RMICacheReplicatorFactory” properties=&quot;replicateAsynchronously=true, replicatePuts=true, replicatePutsViaCopy=false, replicateUpdates=true, replicateUpdatesViaCopy=true, replicateRemovals=true asynchronousReplicationIntervalMillis=1000&quot;/> </cache>

48. Using Ehcache with Terracotta

49. pom.xml <dependency> <groupId>net.sf.ehcache</groupId> <artifactId>ehcache-core</artifactId> <version>1.7.2</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-jdk14</artifactId> <version>1.5.8</version> </dependency> <dependency> <groupId>net.sf.ehcache</groupId> <artifactId>ehcache-terracotta</artifactId> <version>1.8.0</version> </dependency>