Question

I’m migrating to Nhibernate 2.0 GA but have some trouble with setting cache expirations in memcached provider.

I see in the NHibernate.Caches.MemCache sources that there is a property for expiration and a default value for 300 seconds.

There are also properties for cache regions but the config section handler does not seem to map them.

Is there some other way cache expiration times are set that is not provider specific —

Here is functional web config section (without an expiration settings obviously).

<memcache>     <memcached host='127.0.0.1' port='11211'/>     <!-- or multiples --> </memcache>  <hibernate-configuration xmlns='urn:nhibernate-configuration-2.2'>     <session-factory>         <property name='show_sql'>true</property>         <property name='connection.provider' >NHibernate.Connection.DriverConnectionProvider</property>         <property name='dialect'>NHibernate.Dialect.MsSql2000Dialect</property>         <property name='connection.driver_class'>NHibernate.Driver.SqlClientDriver</property>                 <!--    <property name='hibernate.cache.provider_class' value='NHibernate.Caches.MemCache.MemCacheProvider,NHibernate.Caches.MemCache' /> -->         <property name='connection.connection_string'>Data Source=stage2.ripple6.com;Initial Catalog=r6stage;User Id=sa;Password=mworld7650;Application Name=Hibernate;</property>         <property name='connection.isolation'>ReadCommitted</property>         <property name='cache.use_second_level_cache'>true</property>         <property name='cache.provider_class'>NHibernate.Caches.MemCache.MemCacheProvider,NHibernate.Caches.MemCache</property>         <property name='default_schema' >r6stage.dbo</property>     </session-factory>  </hibernate-configuration> 

Answer 1

Use expiration.

<property name='expiration' >YOUR_INTERVAL_IN_SECONDS</property> 

After that, when you run app with logging you can see:

NHibernate.Caches.MemCache.MemCacheClient: 20:57:55,762 DEBUG MemCacheClient:0 - using expiration of YOUR_INTERVAL_IN_SECONDS seconds