Cluster your Cache with Hibernate and Terracotta

Terracotta (an open source technology) provides a clustered, durable, virtual heap. You can reduce the load on your database by allowing Terracotta to handle sharing and persistence of temporary conversational state in your web application. One option is to simply cluster your existing Hibernate L2 cache (for instance with ehcache).

A higher performance option is to disconnect your POJOs from the Hibernate session and manage them entirely in Terracotta shared heap until they are ready to be written back to the system of record. This option can yield extremely high performance while simultaneously reducing the load on your database, allowing you to scale your system with significantly less hardware.

This session will look at the Terracotta architecture and technology and how it can be used in tandem with Hibernate to create a scalable clustered cache that maximizes the benefits of POJOs.

About Alex Miller

Alex Miller is a Sr. Engineer with Terracotta Inc, the makers of the open-source Java clustering product Terracotta. Prior to Terracotta, Alex worked at BEA Systems on the AquaLogic product line and was Chief Architect at MetaMatrix. His interests include Java, concurrency, distributed systems, query languages, and software design. Alex enjoys writing his blog at http://tech.puredanger.com and has spoken at a number of Java user group meetings and conferences.

In St. Louis, Alex is responsible for founding the Lambda Lounge, a user group for the study of functional and dynamic languages.

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