Production system running JBoss clustering

What are some of the larg开发者_StackOverflow中文版est systems that use JBoss clustering? What are the specs/config?

I want to know whether JBoss cluster is really scalable or not.

Thanks

Red Hat publicly lists 92 customers using Enterprise App Platform at http://customers.redhat.com/category/red-hat-jboss-solutions/jboss-enterprise-middleware/jboss-enterprise-platforms/jboss-enterprise-application-platform/

Some that mention clustering are:

• Nationwide Mutual Insurance
• Lifespring Hospitals SBI Life
• Insurance Booz Allen Hamilton
• SwissCom Florida Hospital

Some materials downloadable from JBoss World 2010 at http://www.redhat.com/promo/summit/2010/presentations/jbossworld/ you might useful are:

• Dynamic Clusters with Apache httpd, Mod-Cluster, & JBoss
• JBoss in the Trenches