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<?php |
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/** @noinspection PhpComposerExtensionStubsInspection */ |
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namespace Vectorface\Cache; |
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use Memcache; |
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use Vectorface\Cache\Common\PSR16Util; |
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/** |
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* Implements the cache interface on top of Memcache |
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* |
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* This cache is very fast, according to basic benchmarks: |
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* |
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* Parameters: |
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* Memcache 1.2.2, running locally |
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* 9-byte key |
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* 151-byte value |
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* 10000-iteration test |
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* |
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* Result: |
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* 0.859622001648 seconds |
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* |
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* Conclusion: |
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* Capable of approximately 11678 requests/second |
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*/ |
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class MCCache implements Cache, AtomicCounter |
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{ |
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use PSR16Util; |
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/** |
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* Memcache instance; Connection to the memcached server. |
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* |
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* @var Memcache |
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*/ |
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private $mc; |
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/** |
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* Create a new memcache-based cache. |
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* |
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* @param Memcache $mc The memcache instance, or null to try to build one. |
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*/ |
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public function __construct(Memcache $mc) |
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{ |
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$this->mc = $mc; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function get($key, $default = null) |
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{ |
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$value = $this->mc->get($this->key($key)); |
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return ($value === false) ? $default : $value; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function set($key, $value, $ttl = null) |
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{ |
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return $this->mc->set($this->key($key), $value, null, $this->ttl($ttl)); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function delete($key) |
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{ |
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return $this->mc->delete($this->key($key)); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function clean() |
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{ |
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return true; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function flush() |
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{ |
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return $this->mc->flush(); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function clear() |
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{ |
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return $this->flush(); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function getMultiple($keys, $default = null) |
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{ |
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$keys = $this->keys($keys); |
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$values = $this->mc->get($keys); |
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if ($values === false) { |
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$values = []; |
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} elseif (is_string($values)) { |
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$values = [$values]; // shouldn't technically happen if $keys is an array |
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} |
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foreach ($keys as $key) { |
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if (!isset($values[$key]) || $values[$key] === false) { |
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$values[$key] = $default; |
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} |
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} |
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return $values; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function setMultiple($values, $ttl = null) |
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{ |
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$success = true; |
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foreach ($this->values($values) as $key => $value) { |
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$success = $this->set($key, $value, $ttl) && $success; |
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} |
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return $success; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function deleteMultiple($keys) |
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{ |
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$success = true; |
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foreach ($this->keys($keys) as $key) { |
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$success = $this->delete($key) && $success; |
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} |
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return $success; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function has($key) |
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{ |
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return $this->get($this->key($key), null) !== null; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function increment($key, $step = 1, $ttl = null) |
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{ |
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$key = $this->key($key); |
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// If the key already exists, this is a no-op, otherwise it ensures the key is created. |
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// See https://www.php.net/manual/en/memcache.increment.php#90864 |
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$this->mc->add($key, 0, null, $this->ttl($ttl)); |
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return $this->mc->increment($key, $this->step($step)); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function decrement($key, $step = 1, $ttl = null) |
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{ |
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$key = $this->key($key); |
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// If the key already exists, this is a no-op, otherwise it ensures the key is created. |
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// See https://www.php.net/manual/en/memcache.increment.php#90864 |
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$this->mc->add($key, 0, null, $this->ttl($ttl)); |
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return $this->mc->decrement($key, $this->step($step)); |
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} |
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} |
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Vectorface /
cache
