second level cache not working

Question

i'm trying to work with second level cache this is my fluent mapping

class AutoMapping
{
    private ISessionFactory m_SessionFactory;
    private ISession m_Session;
    private IDbConnection conn;

    public ISession configure()
    {
        return m_SessionFactory.OpenSession(conn);
    }

    public AutoMapping()
    {
        Configuration config = GetConfig();
        m_SessionFactory = config.BuildSessionFactory();

        m_Session = m_SessionFactory.OpenSession();

        new SchemaExport(config).Execute(true, true, false, m_Session.Connection, Console.Out);
        conn = m_Session.Connection;
   }

    private Configuration GetConfig()
    {

        var conf = Fluently.Configure();
        Mappings(conf).DBSetup(conf);
        return conf.BuildConfiguration();
    }

    private AutoMapping Mappings(FluentConfiguration configuration)
    {
        configuration.
            Mappings(m => m.AutoMappings.Add(AutoMap.AssemblyOf<Chen>().Alterations(x=>x.Add(new CacheAlternation()))));
        return this;
    }

    private AutoMapping DBSetup(FluentConfiguration configuration)
    {

        configuration.Database(SQLiteConfiguration.Standard.InMemory().ShowSql().
                                                 Cache(x => x.ProviderClass<NHibernate.Cache.HashtableCacheProvider>()));

        return this;
    }


}

public class CacheAlternation : IAutoMappingAlteration
{
    #region IAutoMappingAlteration Members

    public void Alter(AutoPersistenceModel model)
    {
        model.Conventions.Add(new CacheConvention());
    }

    #endregion
}

public class CacheConvention : FluentNHibernate.Conventions.IClassConvention
{
    #region Implementation of IConvention<IMapInspector,IMapInstance>

    public void Apply(IMapInstance instance)
    {

    }

    #endregion

    #region Implementation of IConvention<IClassInspector,IClassInstance>

    public void Apply(IClassInstance instance)
    {
        instance.Cache.ReadWrite();
        instance.Cache.Region(instance.EntityType.Name);
        instance.Cache.IncludeAll();
    }

    #endregion
}

}

its not working i add some Chen's to db, than i select them and the sql is shown in console? what's wrong?