first version

kirby/src/Cache/ApcuCache.php

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+<?php
+
+namespace Kirby\Cache;
+
+/**
+ * APCu Cache Driver
+ *
+ * @package   Kirby Cache
+ * @author    Bastian Allgeier <bastian@getkirby.com>
+ * @link      http://getkirby.com
+ * @copyright Bastian Allgeier
+ * @license   MIT
+ */
+class ApcuCache extends Cache
+{
+
+    /**
+     * Write an item to the cache for a given number of minutes.
+     *
+     * <code>
+     *    // Put an item in the cache for 15 minutes
+     *    Cache::set('value', 'my value', 15);
+     * </code>
+     *
+     * @param  string  $key
+     * @param  mixed   $value
+     * @param  int     $minutes
+     * @return void
+     */
+    public function set(string $key, $value, int $minutes = 0)
+    {
+        return apcu_store($key, $this->value($value, $minutes)->toJson(), $this->expiration($minutes));
+    }
+
+    /**
+     * Retrieve an item from the cache.
+     *
+     * @param  string  $key
+     * @return mixed
+     */
+    public function retrieve(string $key)
+    {
+        return Value::fromJson(apcu_fetch($key));
+    }
+
+    /**
+     * Checks if the current key exists in cache
+     *
+     * @param  string  $key
+     * @return boolean
+     */
+    public function exists(string $key): bool
+    {
+        return apcu_exists($key);
+    }
+
+    /**
+     * Remove an item from the cache
+     *
+     * @param  string  $key
+     * @return boolean
+     */
+    public function remove(string $key): bool
+    {
+        return apcu_delete($key);
+    }
+
+    /**
+     * Flush the entire cache directory
+     *
+     * @return boolean
+     */
+    public function flush(): bool
+    {
+        return apcu_clear_cache();
+    }
+}