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# CakePHP Caching Library

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The Cache library provides a `Cache` service locator for interfacing with multiple caching backends using

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a simple to use interface.

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The caching backends supported are:

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* Files

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* APC

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* Memcached

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* Redis

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* Wincache

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* Xcache

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## Usage

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Caching engines need to be configured with the `Cache::config()` method.

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```php

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use Cake\Cache\Cache;

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// Using a short name

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Cache::config('default', [

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'className' => 'File',

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'duration' => '+1 hours',

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'path' => sys_get_tmp_dir(),

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'prefix' => 'my_app_'

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]);

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// Using a fully namespaced name.

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Cache::config('long', [

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'className' => 'Cake\Cache\Engine\ApcuEngine',

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'duration' => '+1 week',

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'prefix' => 'my_app_'

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]);

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// Using a constructed object.

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$object = new FileEngine($config);

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Cache::config('other', $object);

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```

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You can now read a write from the cache:

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```php

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$data = Cache::remember('my_cache_key', function () {

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return Service::expensiveCall();

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});

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```

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The code above will try to look for data stored in cache under the `my_cache_key`, if not found

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the callback will be executed and the returned data will be cached for future calls.

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## Documentation

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Please make sure you check the [official documentation](https://book.cakephp.org/3/en/core-libraries/caching.html)

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