public static function totalMembers()
    {
        $members = Podium::getInstance()->podiumCache->get('forum.memberscount');
        if ($members === false) {
            $members = User::find()->where(['!=', 'status', User::STATUS_REGISTERED])->count();
            Podium::getInstance()->podiumCache->set('forum.memberscount', $members);
        }
        return $members;
    }