« Massive Productivity gains for Java developers | Main | Terracotta is coming to a JUG near you »

October 26, 2006

Linear Scaling for HTTP Session Clustering

posted by dem

Traditional approaches to session clustering incur a significant performance hit due to the overhead of serializing objects. Terracotta avoids serialization and instead clusters by replicating only field-level changes to objects and additionally only replicating changes out to the application nodes as the changes are requested.

In our most recent performance tests, 6 Tomcat nodes clustered with Terracotta Sessions sustained over 7,000 TPS compared to about 2,000 TPS for 6 nodes clustered with Tomcat's built-in "Pooled Mode" clustering. For the detals, see the Terracotta & Tomcat Sessions white paper at: http://www.terracottatech.com/documentation.shtml

Comments

In order to ensure that discussions on our weblog are open and unrestricted, Terracotta states that the views expressed in any posts or comments are not necessarily those of Terracotta, and that Terracotta makes no representations or warranties regarding the accuracy of any information contained in any posts or comments.