How can we guarantee that in a clustered environment there is one instance of the class

Question

How can we guarantee that in a clustered environment there is one instance of the class? Class Serializable.

Answer 1

You need to correctly implement the readResolve method of your singleton class.

I think terracotta will help.

This link has additional help http://forums.terracotta.org/forums/posts/list/771.page

Answer 2

Use a container that provides cloud single point applications, for example. Seam, Spring, etc.

Answer 3

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