+<?php
+
+namespace Friendica\Core\Cache;
+use Friendica\BaseObject;
+
+
+/**
+ * Abstract class for common used functions
+ *
+ * Class AbstractCacheDriver
+ *
+ * @package Friendica\Core\Cache
+ */
+abstract class AbstractCacheDriver extends BaseObject implements IMemoryCacheDriver
+{
+ /**
+ * @param string $key The original key
+ * @return string The cache key used for the cache
+ */
+ protected function getCacheKey($key) {
+ return self::getApp()->get_hostname() . ":" . $key;
+ }
+}
\ No newline at end of file