laravel cache缓存解决访问速度

查询近7天近30天的数据，并且把每天的数据拿出来生成一个连续多日的折线图：

思路：要拿到每天的数据，循环查询数据库速度很慢，近7天就要查7次，近30天就要查30次，如果一次拿7天或者30天，再循环判断出每天的又需要大改原逻辑，所以想了下，除了今天的数据是实时的，其他时间数据已经不会变了，就把他们存到缓存中，近7天第一天的数据就缓存一天，第二天就缓存两天，因为明天再查近7天，这个第一天就不用了，但是结合还要查近30天，所以近7天的第一天就缓存24天，后面依次推。

代码：

if($time_type==6){
    //组合数据
    $date = [];
    $data = [];
    for ($i=0; $i<=6; $i++){
        $date[$i] = date("n.j" ,strtotime( '+' . $i-6 .' days', time()));

        $time_search_string['start_time'] = strtotime(date("Y-m-d" ,strtotime( '+' . $i-6 .' days', time())));
        $time_search_string['end_time'] = strtotime(date("Y-m-d" ,strtotime( '+' . $i-6 .' days', time())))+86399;

        //如何是今天则取实时数据
        if( $time_search_string['start_time']==strtotime(date("Y-m-d",time())) ){
            $data[$i] = $this->VisitRankData($department_id,$del_type,$time_search_string,$position_status,1);
        }else{
            if (!Cache::has('visit_echart_'.$department_id.'_'.$del_type.'_'.$time_search_string['start_time'].'_'.$time_search_string['end_time'].'_'.$position_status.'_1')) {
                $data[$i] = $this->VisitRankData($department_id,$del_type,$time_search_string,$position_status,1);
                Cache::put('visit_echart_'.$department_id.'_'.$del_type.'_'.$time_search_string['start_time'].'_'.$time_search_string['end_time'].'_'.$position_status.'_1',json_encode($data[$i]),($i+24)*24*60);
            } else {
                $data[$i]=json_decode(Cache::get('visit_echart_'.$department_id.'_'.$del_type.'_'.$time_search_string['start_time'].'_'.$time_search_string['end_time'].'_'.$position_status.'_1'),true);
            }
        }
    }
}else{
    //组合数据
    $date = [];
    $data = [];
    for ($i=0; $i<=29; $i++){
        $date[$i] = date("n.j" ,strtotime( '+' . $i-29 .' days', time()));

        $time_search_string['start_time'] = strtotime(date("Y-m-d" ,strtotime( '+' . $i-29 .' days', time())));
        $time_search_string['end_time'] = strtotime(date("Y-m-d" ,strtotime( '+' . $i-29 .' days', time())))+86399;

        //如何是今天则取实时数据
        if( $time_search_string['start_time']==strtotime(date("Y-m-d",time())) ){
            $data[$i] = $this->VisitRankData($department_id,$del_type,$time_search_string,$position_status,1);
        }else{
            if (!Cache::has('visit_echart_'.$department_id.'_'.$del_type.'_'.$time_search_string['start_time'].'_'.$time_search_string['end_time'].'_'.$position_status.'_1')) {
                $data[$i] = $this->VisitRankData($department_id,$del_type,$time_search_string,$position_status,1);
                Cache::put('visit_echart_'.$department_id.'_'.$del_type.'_'.$time_search_string['start_time'].'_'.$time_search_string['end_time'].'_'.$position_status.'_1',json_encode($data[$i]),($i+1)*24*60);
            } else {
                $data[$i]=json_decode(Cache::get('visit_echart_'.$department_id.'_'.$del_type.'_'.$time_search_string['start_time'].'_'.$time_search_string['end_time'].'_'.$position_status.'_1'),true);
            }
        }
    }
}

来源：oschina

链接：https://my.oschina.net/guozhouyuan/blog/4308221

标签

EChart