I have the Membase server installed with a couple buckets setup and I was looking for a good tutorial or example of how to use this as the 2nd level cache with NHibernate.
I am interested in what a sample configuration would look like and if there is anything I need to do in code or if I can handle it all from my NHibernate mappings.
Thanks for any assistance.
In your mapping files, you will need to include the property:
<class name="ClassName" table="Table">
<cache usage="read-write" />
<!-- SNIP -->
</class>
Options are read-write (read committed isolation), nonstrict-read-write (objects that are rarely written, better performance but increased chance of stale data), or read-only (data that never changes).
Then, in your web (or app) config you need a section to configure memcached:
<configuration>
<configSections>
<!-- SNIP -->
<section name="memcache" type="NHibernate.Caches.MemCache.MemCacheSectionHandler,NHibernate.Caches.MemCache" />
</configSections>
<memcache>
<memcached host="127.0.0.1" port="11211" weight="2" />
</memcache>
<!-- SNIP -->
</configuration>
Finally, in your session factory configuration be sure to use:
<hibernate-configuration>
<session-factory>
<!-- SNIP -->
<property name="expiration">300</property> <!--memcache uses seconds -->
<property name="cache.provider_class">NHibernate.Caches.MemCache.MemCacheProvider,NHibernate.Caches.MemCache</property>
<property name="cache.use_second_level_cache">true</property>
<property name="cache.use_query_cache">false</property> <!-- true if you want to cache query results -->
</session-factory>
</hibernate-configuration>
Of course you will need to download and reference a dll from the appropriate version of NHibernate.Caches to get the right cache provider. The memcached one takes a dependency on ICSharpCode.SharpZipLib and Memcached.ClientLibrary as well (s/b included in the download)
If you're using fluent NHibernate, there is a .Cache method in the setup chain for a session factory that you can use, though some of the properties need to be set manually through a call to .ExposeConfiguration.
来源:https://stackoverflow.com/questions/5721964/nhibernate-and-memcached-tutorial-example