105 lines
2.1 KiB
PHP
105 lines
2.1 KiB
PHP
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<?php
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namespace Doctrine\Common\Cache;
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use Memcache;
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use function time;
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/**
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* Memcache cache provider.
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*
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* @deprecated
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*
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* @link www.doctrine-project.org
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*/
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class MemcacheCache extends CacheProvider
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{
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/** @var Memcache|null */
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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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* @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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