namespace Friendica\Core\Cache;
-use Friendica\BaseObject;
use Friendica\Core\Cache;
/**
* @author Hypolite Petovan <mrpetovan@gmail.com>
* @author Roland Haeder <roland@mxchange.org>
*/
-class RedisCacheDriver extends BaseObject implements ICacheDriver
+class RedisCacheDriver extends AbstractCacheDriver implements IMemoryCacheDriver
{
/**
- * @var Redis
+ * @var \Redis
*/
private $redis;
public function get($key)
{
$return = null;
+ $cachekey = $this->getCacheKey($key);
- // We fetch with the hostname as key to avoid problems with other applications
- $cached = $this->redis->get(self::getApp()->get_hostname() . ':' . $key);
-
- // @see http://php.net/manual/en/redis.get.php#84275
- if (is_bool($cached) || is_double($cached) || is_long($cached)) {
- return $return;
+ $cached = $this->redis->get($cachekey);
+ if ($cached === false && !$this->redis->exists($cachekey)) {
+ return null;
}
- $value = @unserialize($cached);
+ $value = json_decode($cached);
// Only return a value if the serialized value is valid.
// We also check if the db entry is a serialized
return $return;
}
- public function set($key, $value, $duration = Cache::MONTH)
+ public function set($key, $value, $ttl = Cache::FIVE_MINUTES)
{
- // We store with the hostname as key to avoid problems with other applications
- return $this->redis->set(
- self::getApp()->get_hostname() . ":" . $key,
- serialize($value),
- time() + $duration
- );
+ $cachekey = $this->getCacheKey($key);
+
+ $cached = json_encode($value);
+
+ if ($ttl > 0) {
+ return $this->redis->setex(
+ $cachekey,
+ $ttl,
+ $cached
+ );
+ } else {
+ return $this->redis->set(
+ $cachekey,
+ $cached
+ );
+ }
}
public function delete($key)
{
- return $this->redis->delete($key);
+ $cachekey = $this->getCacheKey($key);
+ return ($this->redis->delete($cachekey) > 0);
}
- public function clear()
+ public function clear($outdated = true)
{
- return true;
+ if ($outdated) {
+ return true;
+ } else {
+ return $this->redis->flushAll();
+ }
+ }
+
+ /**
+ * (@inheritdoc)
+ */
+ public function add($key, $value, $ttl = Cache::FIVE_MINUTES)
+ {
+ $cachekey = $this->getCacheKey($key);
+ $cached = json_encode($value);
+
+ return $this->redis->setnx($cachekey, $cached);
+ }
+
+ /**
+ * (@inheritdoc)
+ */
+ public function compareSet($key, $oldValue, $newValue, $ttl = Cache::FIVE_MINUTES)
+ {
+ $cachekey = $this->getCacheKey($key);
+
+ $newCached = json_encode($newValue);
+
+ $this->redis->watch($cachekey);
+ // If the old value isn't what we expected, somebody else changed the key meanwhile
+ if ($this->get($key) === $oldValue) {
+ if ($ttl > 0) {
+ $result = $this->redis->multi()
+ ->setex($cachekey, $ttl, $newCached)
+ ->exec();
+ } else {
+ $result = $this->redis->multi()
+ ->set($cachekey, $newValue)
+ ->exec();
+ }
+ return $result !== false;
+ }
+ $this->redis->unwatch();
+ return false;
+ }
+ /**
+ * (@inheritdoc)
+ */
+ public function compareDelete($key, $value)
+ {
+ $cachekey = $this->getCacheKey($key);
+
+ $this->redis->watch($cachekey);
+ // If the old value isn't what we expected, somebody else changed the key meanwhile
+ if ($this->get($key) === $value) {
+ $result = $this->redis->multi()
+ ->del($cachekey)
+ ->exec();
+ return $result !== false;
+ }
+ $this->redis->unwatch();
+ return false;
}
}