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<?php |
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/* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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* This software consists of voluntary contributions made by many individuals |
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* and is licensed under the MIT license. For more information, see |
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* <http://www.doctrine-project.org>. |
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*/ |
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namespace Doctrine\Common\Cache; |
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use \Memcache; |
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/** |
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* Memcache cache provider. |
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* |
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* @link www.doctrine-project.org |
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* @since 2.0 |
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* @author Benjamin Eberlei <[email protected]> |
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* @author Guilherme Blanco <[email protected]> |
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* @author Jonathan Wage <[email protected]> |
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* @author Roman Borschel <[email protected]> |
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* @author David Abdemoulaie <[email protected]> |
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*/ |
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class MemcacheCache extends CacheProvider |
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{ |
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/** |
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* @var Memcache|null |
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*/ |
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private $memcache; |
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/** |
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* Sets the memcache instance to use. |
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* |
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* @param Memcache $memcache |
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* |
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* @return void |
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*/ |
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public function setMemcache(Memcache $memcache) |
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{ |
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$this->memcache = $memcache; |
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} |
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/** |
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* Gets the memcache instance used by the cache. |
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* |
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* @return Memcache|null |
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*/ |
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public function getMemcache() |
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{ |
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return $this->memcache; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function doFetch($id) |
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{ |
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return $this->memcache->get($id); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function doContains($id) |
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{ |
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$flags = null; |
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$this->memcache->get($id, $flags); |
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//if memcache has changed the value of "flags", it means the value exists |
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return ($flags !== null); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function doSave($id, $data, $lifeTime = 0) |
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{ |
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if ($lifeTime > 30 * 24 * 3600) { |
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$lifeTime = time() + $lifeTime; |
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} |
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return $this->memcache->set($id, $data, 0, (int) $lifeTime); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function doDelete($id) |
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{ |
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// Memcache::delete() returns false if entry does not exist |
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return $this->memcache->delete($id) || ! $this->doContains($id); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function doFlush() |
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{ |
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return $this->memcache->flush(); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function doGetStats() |
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{ |
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$stats = $this->memcache->getStats(); |
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return [ |
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Cache::STATS_HITS => $stats['get_hits'], |
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Cache::STATS_MISSES => $stats['get_misses'], |
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Cache::STATS_UPTIME => $stats['uptime'], |
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Cache::STATS_MEMORY_USAGE => $stats['bytes'], |
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Cache::STATS_MEMORY_AVAILABLE => $stats['limit_maxbytes'], |
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]; |
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} |
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} |
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doctrine /
cache
