Simple analysis on the use of YII2 cache, analysis of YII2 cache using _php Tutorial

Analysis on the use of YII2 cache, analysis of YII2 cache usage

A good framework is definitely inseparable from the use of the cache, on the contrary, a non-cached framework is certainly not a good frame, it seems to be a meaning, regardless, we first look at how to use the cache in Yii2.

It's time for us to do the first step, let's configure the components first.

For convenience, our cache components are configured in the common\config\main.php file, which comes first with a simple configuration under the file cache

' Components ' = [' cache ' = [' class ' = ' Yii\caching\filecache ', ' cachepath ' = ' @runtime/cache2 ',],],

The so-called file cache, in fact, is to store the data we want to cache into a file, where is the data cached?

The default cache path is @app\runtime\cache directory, if you want to modify the cache path, you can configure the same as above, configure the next CachePath can be

Let's just take a look.

$cache = Yii:: $app->cache; $data = $cache->get (' Cache_data_key '); if ($data = = = False) {//Here we can manipulate the database to get the data and then cache it through the $cache->set method $cacheData = ... the first parameter of the//set method is the key value of our data, Convenient for us to get to//The second parameter is that we want to cache the data//The third parameter is the cache time, if it is 0, means the permanent cache. The default is 0 $cache->set (' Cache_data_key ', $cacheData, 60*60); } var_dump ($data);

The above is a small section to introduce the use of YII2 cache, we can refer to the following.

Here is a description of how Yii sets cache cache

First add the configuration file in the components array:

Copy the Code code as follows:
' Cache ' =>array (' class ' = ' CFileCache '),

Set cache:

Yii::app ()->cache->set (' Testcache ', Array (1,3,4,6));//The default validity is one year Yii::app ()->cache->set (' Testcache ', Array (1,3,4,6), 3600);//One clock, second unit

Get cache:

$data = Yii::app ()->cache->get (' Testcache ');

To delete a single cache:

Yii::app ()->cache->delete (' Testcache ');

Clear all caches:

Yii::app ()->cache->flush ();

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