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<?php |
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// +---------------------------------------------------------------------- |
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// | ThinkPHP [ WE CAN DO IT JUST THINK ] |
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// +---------------------------------------------------------------------- |
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// | Copyright (c) 2006~2019 http://thinkphp.cn All rights reserved. |
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// +---------------------------------------------------------------------- |
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// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 ) |
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// +---------------------------------------------------------------------- |
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// | Author: liu21st <[email protected]> |
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// +---------------------------------------------------------------------- |
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namespace think\cache\driver; |
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use think\cache\Driver; |
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use think\contract\CacheHandlerInterface; |
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/** |
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* Redis缓存驱动，适合单机部署、有前端代理实现高可用的场景，性能最好 |
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* 有需要在业务层实现读写分离、或者使用RedisCluster的需求，请使用Redisd驱动 |
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* |
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* 要求安装phpredis扩展：https://github.com/nicolasff/phpredis |
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* @author 尘缘 <[email protected]> |
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*/ |
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class Redis extends Driver implements CacheHandlerInterface |
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{ |
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/** |
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* 配置参数 |
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* @var array |
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*/ |
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protected $options = [ |
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'host' => '127.0.0.1', |
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'port' => 6379, |
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'password' => '', |
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'select' => 0, |
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'timeout' => 0, |
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'expire' => 0, |
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'persistent' => false, |
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'prefix' => '', |
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'tag_prefix' => 'tag_', |
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'serialize' => [], |
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]; |
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/** |
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* 架构函数 |
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* @access public |
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* @param array $options 缓存参数 |
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*/ |
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public function __construct(array $options = []) |
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{ |
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if (!empty($options)) { |
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$this->options = array_merge($this->options, $options); |
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} |
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if (extension_loaded('redis')) { |
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$this->handler = new \Redis; |
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if ($this->options['persistent']) { |
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$this->handler->pconnect($this->options['host'], (int) $this->options['port'], $this->options['timeout'], 'persistent_id_' . $this->options['select']); |
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} else { |
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$this->handler->connect($this->options['host'], (int) $this->options['port'], $this->options['timeout']); |
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} |
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if ('' != $this->options['password']) { |
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$this->handler->auth($this->options['password']); |
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} |
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if (0 != $this->options['select']) { |
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$this->handler->select($this->options['select']); |
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} |
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} elseif (class_exists('\Predis\Client')) { |
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$params = []; |
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foreach ($this->options as $key => $val) { |
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if (in_array($key, ['aggregate', 'cluster', 'connections', 'exceptions', 'prefix', 'profile', 'replication', 'parameters'])) { |
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$params[$key] = $val; |
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unset($this->options[$key]); |
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} |
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} |
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if ('' == $this->options['password']) { |
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unset($this->options['password']); |
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} |
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$this->handler = new \Predis\Client($this->options, $params); |
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if (0 != $this->options['select']) { |
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$this->handler->select($this->options['select']); |
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} |
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$this->options['prefix'] = ''; |
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} else { |
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throw new \BadFunctionCallException('not support: redis'); |
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} |
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} |
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/** |
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* 判断缓存 |
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* @access public |
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* @param string $name 缓存变量名 |
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* @return bool |
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*/ |
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public function has($name): bool |
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{ |
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return $this->handler->exists($this->getCacheKey($name)); |
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} |
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/** |
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* 读取缓存 |
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* @access public |
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* @param string $name 缓存变量名 |
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* @param mixed $default 默认值 |
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* @return mixed |
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*/ |
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public function get($name, $default = false) |
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{ |
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$this->readTimes++; |
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$value = $this->handler->get($this->getCacheKey($name)); |
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if (is_null($value) || false === $value) { |
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return $default; |
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} |
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return $this->unserialize($value); |
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} |
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/** |
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* 写入缓存 |
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* @access public |
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* @param string $name 缓存变量名 |
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* @param mixed $value 存储数据 |
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* @param integer|\DateTime $expire 有效时间（秒） |
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* @return bool |
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*/ |
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public function set($name, $value, $expire = null): bool |
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{ |
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$this->writeTimes++; |
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if (is_null($expire)) { |
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$expire = $this->options['expire']; |
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} |
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if (!empty($this->tag) && !$this->has($name)) { |
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$first = true; |
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} |
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$key = $this->getCacheKey($name); |
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$expire = $this->getExpireTime($expire); |
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$value = $this->serialize($value); |
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if ($expire) { |
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$this->handler->setex($key, $expire, $value); |
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} else { |
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$this->handler->set($key, $value); |
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} |
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isset($first) && $this->setTagItem($key); |
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return true; |
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} |
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/** |
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* 自增缓存（针对数值缓存） |
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* @access public |
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* @param string $name 缓存变量名 |
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* @param int $step 步长 |
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* @return false|int |
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*/ |
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public function inc(string $name, int $step = 1) |
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{ |
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$this->writeTimes++; |
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$key = $this->getCacheKey($name); |
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return $this->handler->incrby($key, $step); |
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} |
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/** |
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* 自减缓存（针对数值缓存） |
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* @access public |
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* @param string $name 缓存变量名 |
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* @param int $step 步长 |
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* @return false|int |
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*/ |
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public function dec(string $name, int $step = 1) |
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{ |
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$this->writeTimes++; |
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$key = $this->getCacheKey($name); |
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return $this->handler->decrby($key, $step); |
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} |
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/** |
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* 删除缓存 |
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* @access public |
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* @param string $name 缓存变量名 |
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* @return bool |
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*/ |
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public function delete($name): bool |
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{ |
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$this->writeTimes++; |
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$this->handler->del($this->getCacheKey($name)); |
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return true; |
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} |
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/** |
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* 清除缓存 |
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* @access public |
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* @return bool |
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*/ |
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public function clear(): bool |
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{ |
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$this->writeTimes++; |
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$this->handler->flushDB(); |
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return true; |
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} |
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/** |
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* 删除缓存标签 |
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* @access public |
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* @param array $keys 缓存标识列表 |
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* @return void |
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*/ |
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public function clearTag(array $keys): void |
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{ |
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// 指定标签清除 |
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$this->handler->del($keys); |
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} |
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/** |
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* 追加（数组）缓存数据 |
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* @access public |
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* @param string $name 缓存标识 |
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* @param mixed $value 数据 |
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* @return void |
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*/ |
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public function push(string $name, $value): void |
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{ |
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$this->handler->sAdd($name, $value); |
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} |
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/** |
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* 获取标签包含的缓存标识 |
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* @access public |
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* @param string $tag 缓存标签 |
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* @return array |
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*/ |
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public function getTagItems(string $tag): array |
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{ |
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return $this->handler->sMembers($tag); |
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} |
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} |
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top-think /
framework
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