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Introduction and use of yii2 cache, introduction and use of yii2 cache_PHP tutorial
Introduction and use of yii2 cache, introduction and use of yii2 cache_PHP tutorial
Jul 12, 2016 am 08:52 AM
Introduction and use of yii2 cache, introduction and use of yii2 cache
Author: Bailang Source: http://www.manks.top/yii2_cache.html The copyright of this article belongs to the author, Reprinting is welcome, but this statement must be retained without the author's consent, and a link to the original text must be provided in an obvious position on the article page. Otherwise, we reserve the right to pursue legal liability.
A good framework is definitely inseparable from the use of cache. On the contrary, a framework without cache is definitely not a good framework. It seems to mean the same thing. Regardless, let’s first take a look at how caching is used in yii2. Bar.
It’s time for our first step again. Let’s configure the components first.
For convenience, our caching component is configured in the commonconfigmain.php file. First, let’s simply configure the file cache
'components' => [ <br /> 'cache' => [ <br /> 'class' => 'yii\caching\FileCache', <br /> 'cachePath' => '@runtime/cache2', <br /> ], <br />],
<span>所謂的文件緩存，其實就是把我們要緩存的數(shù)據(jù)存放到文件內(nèi)，那數(shù)據(jù)又緩存到哪里了呢？</span>
//The default cache path is in the @appruntimecache directory. If you want to modify the cache path, you can configure cachePath as configured above
Let’s take a look directly
<span>$cache</span> = Yii::<span>$app</span>-><span>cache;
</span><span>$data</span> = <span>$cache</span>->get('cache_data_key'<span>);
</span><span>if</span> (<span>$data</span> === <span>false</span><span>) {
</span><span>//</span><span>這里我們可以操作數(shù)據(jù)庫獲取數(shù)據(jù)，然后通過$cache->set方法進行緩存 </span>
<span>$cacheData</span> = ......
<span>//</span><span>set方法的第一個參數(shù)是我們的數(shù)據(jù)對應的key值，方便我們獲取到
//第二個參數(shù)即是我們要緩存的數(shù)據(jù)
//第三個參數(shù)是緩存時間，如果是0，意味著永久緩存。默認是0 </span>
<span>$cache</span>->set('cache_data_key', <span>$cacheData</span>, 60*60<span>);
}
</span><span>var_dump</span>(<span>$data</span>);
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