//[['u'=>'site.index','d'=>['a'=>2],'k'=>'test']];

    public function apiBatch($arr,$timeout=15000) {

        ini_set("yar.timeout",$timeout);

        $url = C('RPCURL');

        foreach ($arr as  $v){

            $k = $v['k'] ? $v['k']:$v['u'];

            $cacheKey = md5(http_build_query($v));

            if(!$v['t'] || !is_array($this->$k = S($cacheKey))){

                \Yar_Concurrent_Client::call($url."?key=".$k."|".$cacheKey, 'api', $v, [$this, "callback"]);

            }

        }

        \Yar_Concurrent_Client::loop([$this, "callback"], [$this, "error_callback"]);

    }

    //['u'=>'site.index','d'=>[],'t'=>200] 缓存时间秒

    public function api($arr,$timeout=15000) {

        ini_set("yar.timeout",$timeout);

        $url = C('RPCURL');

        $cacheKey = md5(http_build_query($arr));

        $cacheTime = isset($arr['t']) ? $arr['t'] : 300;

        if(!$cacheTime || (!$result = S($cacheKey))){

            $client = new \Yar_Client($url);

            $result = $client->api($arr['u'],$arr['d']);

            if($cacheTime && $result['data']){

                S($cacheKey,$result,  $cacheTime);

            }

        }

        return $result;

    }