在codeigniter的单个缓存文件夹中管理两个不同的缓存文件 [英] Manage Two Different Cache file in single cache folder in codeigniter

问题描述

我需要帮助来找出Codeigniter缓存的一个问题.

I need a help to figure out one issue with the codeigniter caching.

我正在运行两个函数以将结果存储在缓存中.此功能在我的模型中:

I am running two functions to store a result in cache. This function is in my model :

public function cacheAllCurrencies()
    {
        $this->db->cache_on();
        $this->db->select("name,icon,currency_code");
        $this->db->from("currency");
        $this->db->where("status='Active'");
        $cache_currency_result = $this->db->get()->result();
        $this->db->cache_off();
        return $cache_currency_result;
    }

    public function cacheAllCategory()
    {
        $this->db->cache_on();
        $this->db->select("name,url");
        $this->db->from("category");
        $this->db->where("parent_category='0'");
        $this->db->where("status='Active'");
        $this->db->order_by('name','ASC');
        $cache_category_result = $this->db->get()->result();
        $this->db->cache_off();
        return $cache_category_result;
    }

My these two functions are called in header view like below :

$CI =& get_instance();
$CI->load->model(PUBLIC_DIR.'/commonPage','common');
$currencies = $CI->common->cacheAllCurrencies();
$categories = $CI->common->cacheAllCategory();

现在，当所有页面加载完毕后，它会根据打开的页面(例如首页，博客，博客+博客名称等)创建一个缓存文件.

Now, when all the page loads, it creates a cache file according to the page opened like home, blog, blog+blogname etc.

两个查询都会在缓存文件夹中生成两个缓存文件

Both query generates two cache file in cache folder

1580e4c2413cb09f6ed3bc7fae8cee45-第一个功能缓存结果 d7e2452b0424f859e1a5984bd26cbd6c-第二个功能缓存结果

1580e4c2413cb09f6ed3bc7fae8cee45 - first function cache result d7e2452b0424f859e1a5984bd26cbd6c - second function cache result

现在，我有两个问题:

1. 更新类别的货币表相同时，我需要删除1580e4c2413cb09f6ed3bc7fae8cee45缓存文件.
2. 此文件名是如何生成的?我的意思是codeigniter如何生成缓存文件名.在我的缓存中，1580e4c2413cb09f6ed3bc7fae8cee45表示货币，d7e2452b0424f859e1a5984bd26cbd6c表示类别.

1. I need to delete 1580e4c2413cb09f6ed3bc7fae8cee45 cache file when I update currency table same for the category.
2. How this file name generated ? I mean how codeigniter generates cache file name. In my cache 1580e4c2413cb09f6ed3bc7fae8cee45 for currency and d7e2452b0424f859e1a5984bd26cbd6c for category.

我希望这种解释是有意义的，并且希望大多数codeigniter开发人员遇到此问题，需要对其进行解决.

I hope this explanation makes sense and I hope most of the codeigniter developer having this problem which need to be sort it out.

谢谢， 阿里

推荐答案

在 Codeigniter 中，您可以使用表名清除数据库的缓存 喜欢

In Codeigniter, you can clear the cache of DB using the table name like

$this->db->cache_delete('currency');
$this->db->cache_delete('category');

或同时缓存两个表

$this->db->cache_delete('currency','category');

CodeIgniter通过md5()SQL查询加密来保存文件名

EDIT : CodeIgniter save filename by md5() encryption of SQL query

public function cacheAllCurrencies(){
    $this->db->cache_on();
    $this->db->select("name,icon,currency_code");
    $this->db->from("currency");
    $this->db->where("status='Active'");
    //here you get filename
    $file_name=md5($this->db->get_compiled_select());
    $cache_currency_result = $this->db->get()->result();
    $this->db->cache_off();
    return $cache_currency_result;
}

这篇关于在codeigniter的单个缓存文件夹中管理两个不同的缓存文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！