Module_Session_Driver_Cache::__construct

public function __construct($cache_config = null)
{
    if ( $cache_config )
    {
        $this->cache_config = $cache_config;
        if ( is_array($this->cache_config) && !isset($this->cache_config['prefix']) )
        {
            $this->cache_config['prefix'] = '_session:';
        }
    }

    $this->session_name = Session::session_name();

    $this->create();
}