Alachisoft has released the limited version of NCache as NCache Express. This is a FREE edition and is not a trial version. Now you can incorporate NCache Express into you NHibernate applications without any code change. NCache Express has full compliance for NHibernate. You can use the NCache Express for upto 2 server configuration. It provides a stand alone Local Cache and 2-node Replicated Cache topologies.
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