3 namespace Friendica\Core\Cache;
5 use Friendica\BaseObject;
6 use Friendica\Core\Cache;
9 * Redis Cache Driver. This driver is based on Memcache driver
11 * @author Hypolite Petovan <mrpetovan@gmail.com>
12 * @author Roland Haeder <roland@mxchange.org>
14 class RedisCacheDriver extends BaseObject implements ICacheDriver
21 public function __construct($redis_host, $redis_port)
23 if (!class_exists('Redis', false)) {
24 throw new \Exception('Redis class isn\'t available');
27 $this->redis = new \Redis();
29 if (!$this->redis->connect($redis_host, $redis_port)) {
30 throw new \Exception('Expected Redis server at ' . $redis_host . ':' . $redis_port . ' isn\'t available');
34 public function get($key)
38 // We fetch with the hostname as key to avoid problems with other applications
39 $cached = $this->redis->get(self::getApp()->get_hostname() . ':' . $key);
41 // @see http://php.net/manual/en/redis.get.php#84275
42 if (is_bool($cached) || is_double($cached) || is_long($cached)) {
46 $value = @unserialize($cached);
48 // Only return a value if the serialized value is valid.
49 // We also check if the db entry is a serialized
50 // boolean 'false' value (which we want to return).
51 if ($cached === serialize(false) || $value !== false) {
58 public function set($key, $value, $duration = Cache::MONTH)
60 // We store with the hostname as key to avoid problems with other applications
61 return $this->redis->set(
62 self::getApp()->get_hostname() . ":" . $key,
68 public function delete($key)
70 return $this->redis->delete($key);
73 public function clear()