Terracotta - Enterprise-class clustering for Java

Terracotta - Enterprise-class clustering for Java: "Clustering the JVM, Not the Application
Terracotta DSO is a runtime solution for clustering JVMs, instead of the application. By extending the Java heap, Terracotta DSO creates one “clustered” JVM that shares object state and behavior. Tuning the clustering behavior can now be done at runtime without code changes. Developers can focus on business logic, not infrastructure."