hibernate.cfg.xml

<hibernate-configuration xmlns="urn:nhibernate-configuration-2.2">
		<session-factory name="MyApp">
			<!-- ommitted connection configuration -->
<!-- Both cache and second level cache enabled -->
			<property name="cache.provider_class">NHibernate.Caches.SysCache.SysCacheProvider, NHibernate.Caches.SysCache</property>
			<property name="cache.use_second_level_cache">true</property>
			<property name="cache.use_query_cache">true</property>
			<mapping assembly="MyApp.Model"/>
		</session-factory>
	</hibernate-configuration>

Query.cs

//Query is marked as cacheable, but the query cache is never used. 
var rooms = session.CreateQuery("from Room order by Name")
  .SetCacheable(true)
  .List<Room>();

Room.hbm.xml

<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" assembly="MyApp.Model" namespace="MyApp.Model">
	<class name="Room" table="Rooms" mutable="false">
		<!-- entity is set as cacheable -->
		<cache usage="read-only" />
		<id name="Id" column="Room_Id">
			<generator class="identity"/>
		</id>
		<property name="Name" column="Room_Name"/>
		<property name="UseForRegistration" column="Use_For_Registration" />
		<property name="Bookable" />
		<property name="NotAvailableToOthers" column="Not_Available_To_Others" />
	</class>
</hibernate-mapping>