[jboss-user] [JBoss Cache: Core Edition] - Re: huge memory usage problem

[manik.surtani@jboss.com]

There is a lot of overhead in maintaining the tree structure.  The overhead varies with the type of data stored, and if you have a lot of small key/value pairs then the overhead increases quite significantly.  This is one of the motivations for starting the Infinispan [1] project.

One thing you could do is if you are using pessimistic locking, switch to MVCC which reduces the number of locks created and hence memory overhead.

[1] http://www.infinispan.org

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