Rename *CacheDriver to *Cache because they don't act as driver anymore

src/Core/Cache/ICache.php

@@ -0,0 +1,67 @@
+<?php
+
+namespace Friendica\Core\Cache;
+
+/**
+ * Cache Interface
+ *
+ * @author Hypolite Petovan <hypolite@mrpetovan.com>
+ */
+interface ICache
+{
+	const MONTH        = 2592000;
+	const WEEK         = 604800;
+	const DAY          = 86400;
+	const HOUR         = 3600;
+	const HALF_HOUR    = 1800;
+	const QUARTER_HOUR = 900;
+	const FIVE_MINUTES = 300;
+	const MINUTE       = 60;
+	const INFINITE     = 0;
+
+	/**
+	 * Lists all cache keys
+	 *
+	 * @param string prefix optional a prefix to search
+	 *
+	 * @return array Empty if it isn't supported by the cache driver
+	 */
+	public function getAllKeys($prefix = null);
+
+	/**
+	 * Fetches cached data according to the key
+	 *
+	 * @param string $key The key to the cached data
+	 *
+	 * @return mixed Cached $value or "null" if not found
+	 */
+	public function get($key);
+
+	/**
+	 * Stores data in the cache identified by the key. The input $value can have multiple formats.
+	 *
+	 * @param string  $key      The cache key
+	 * @param mixed   $value    The value to store
+	 * @param integer $ttl      The cache lifespan, must be one of the Cache constants
+	 *
+	 * @return bool
+	 */
+	public function set($key, $value, $ttl = self::FIVE_MINUTES);
+
+	/**
+	 * Delete a key from the cache
+	 *
+	 * @param string $key      The cache key
+	 *
+	 * @return bool
+	 */
+	public function delete($key);
+
+	/**
+	 * Remove outdated data from the cache
+	 * @param  boolean $outdated just remove outdated values
+	 *
+	 * @return bool
+	 */
+	public function clear($outdated = true);
+}