extends abstract class Phalcon\Cache\Backend
implements Phalcon\Cache\BackendInterface
Allows to cache output fragments, PHP data or raw data to a libmemcached backend. Per default persistent memcached connection pools are used.
use Phalcon\Cache\Backend\Libmemcached; use Phalcon\Cache\Frontend\Data as FrontData; // Cache data for 2 days $frontCache = new FrontData([ 'lifetime' => 172800 ]); // Create the Cache setting memcached connection options $cache = new Libmemcached($frontCache, [ 'servers' => [ [ 'host' => 'localhost', 'port' => 11211, 'weight' => 1 ], ], 'client' => [ \Memcached::OPT_HASH => Memcached::HASH_MD5, \Memcached::OPT_PREFIX_KEY => 'prefix.', ] ]); // Cache arbitrary data $cache->save('my-data', [1, 2, 3, 4, 5]); // Get data $data = $cache->get('my-data');
Methods
public __construct (Phalcon\Cache\FrontendInterface $frontend, [array $options])
Phalcon\Cache\Backend\Memcache constructor
public _connect ()
Create internal connection to memcached
public get (mixed $keyName, [mixed $lifetime])
Returns a cached content
public save ([int | string $keyName], [string $content], [long $lifetime], [boolean $stopBuffer])
Stores cached content into the file backend and stops the frontend
public boolean delete (int | string $keyName)
Deletes a value from the cache by its key
public array queryKeys ([string $prefix])
Query the existing cached keys
public boolean exists ([string $keyName], [long $lifetime])
Checks if cache exists and it isn’t expired
public long increment ([string $keyName], [mixed $value])
Increment of given $keyName by $value
public long decrement ([string $keyName], [long $value])
Decrement of $keyName by given $value
public flush ()
Immediately invalidates all existing items. Memcached does not support flush() per default. If you require flush() support, set $config[“statsKey”]. All modified keys are stored in “statsKey”. Note: statsKey has a negative performance impact.
$cache = new \Phalcon\Cache\Backend\Libmemcached($frontCache, ["statsKey" => "_PHCM"]); $cache->save('my-data', array(1, 2, 3, 4, 5)); //'my-data' and all other used keys are deleted $cache->flush();
public getFrontend () inherited from Phalcon\Cache\Backend
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public setFrontend (mixed $frontend) inherited from Phalcon\Cache\Backend
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public getOptions () inherited from Phalcon\Cache\Backend
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public setOptions (mixed $options) inherited from Phalcon\Cache\Backend
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public getLastKey () inherited from Phalcon\Cache\Backend
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public setLastKey (mixed $lastKey) inherited from Phalcon\Cache\Backend
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public mixed start (int | string $keyName, [int $lifetime]) inherited from Phalcon\Cache\Backend
Starts a cache. The keyname allows to identify the created fragment
public stop ([mixed $stopBuffer]) inherited from Phalcon\Cache\Backend
Stops the frontend without store any cached content
public isFresh () inherited from Phalcon\Cache\Backend
Checks whether the last cache is fresh or cached
public isStarted () inherited from Phalcon\Cache\Backend
Checks whether the cache has starting buffering or not
public int getLifetime () inherited from Phalcon\Cache\Backend
Gets the last lifetime set
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