Open Terracotta 2.2 Clustering Approach for Java Programming

New release improves transparency, performance

San Francisco, Calif., Jan. 23, 2007 -- Terracotta Inc. today announced the general availability of Open Terracotta 2.2, an open source Java clustering solution that enables developers to achieve scalable, highly available applications using pure open source application server infrastructure without the complexity and expense of traditional JEE-based services. The latest release has been designed and tested with several open source projects whose developer communities are now looking for Terracotta support in those frameworks.

Terracotta’s users enjoy the ability to accelerate their move onto open source application servers like Tomcat, Geronimo, and JBoss due to its increased transparency and open source framework support. The 2.2 release adds general availability for Spring 2.0 clustering plus preliminary support for Glassbox, Wicket, and Lucene. Terracotta has also introduced deeper support for java.util.concurrent for its advanced customers in financial services and telco industries.

Other new features include enhanced memory management and tuning for both the client and server. This release also brings performance enhancements with HTTP session clustering and Alpha support for Java 1.6. Planned, future releases are slated to provide even more enterprise functionality with diskless active-passive Terracotta servers and support for iBATIS-generated POJOs and the Quartz job scheduler.

In practice, developers rely on application server clustering and special development techniques that add costs to projects and can sometimes force developers to choose between reliability and performance. Open Terracotta 2.2 helps minimize this challenge by providing the average user of previous Terracotta releases with an estimated 30 percent increase in performance without having to change anything.


Open Terracotta 2.2 is free to download and use under the Terracotta Public License, which is based on the popular Mozilla Public License (MPL), and allows for free production use and distribution. For download and additional information, visit

Terracotta Enterprise Edition is also generally available and provides JVM clustering for enterprises with professional support through several subscription packages. For more information on Enterprise Terracotta, visit