How singleton is javax.ejb.Singleton in a clustered environment?

Question

I need to maintain a simple counter that is unique within the application, for all users and all nodes in a clustered environment. I thought about using the singleton sessio

Answer 1

You could use hazelcast . It's a distributed in-memory key-value store. Seems like it would be a perfect fit. It also implements JSR-107 which is the JCache spec.