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# CakePHP Caching Library
The Cache library provides a `Cache` service locator for interfacing with multiple caching backends using
a simple to use interface.
The caching backends supported are:
* Files
* APC
* Memcached
* Redis
* Wincache
* Xcache
## Usage
Caching engines need to be configured with the `Cache::config()` method.
```php
use Cake\Cache\Cache;
// Using a short name
Cache::config('default', [
'className' => 'File',
'duration' => '+1 hours',
'path' => sys_get_tmp_dir(),
'prefix' => 'my_app_'
]);
// Using a fully namespaced name.
Cache::config('long', [
'className' => 'Cake\Cache\Engine\ApcuEngine',
'duration' => '+1 week',
'prefix' => 'my_app_'
]);
// Using a constructed object.
$object = new FileEngine($config);
Cache::config('other', $object);
```
You can now read a write from the cache:
```php
$data = Cache::remember('my_cache_key', function () {
return Service::expensiveCall();
});
```
The code above will try to look for data stored in cache under the `my_cache_key`, if not found
the callback will be executed and the returned data will be cached for future calls.
## Documentation
Please make sure you check the [official documentation](https://book.cakephp.org/3.0/en/core-libraries/caching.html)