Add layer to select fast or slow cache for storing values

1 files changed, 55 insertions, 0 deletions

diff --git a/lib/cache/broker.php b/lib/cache/broker.php
new file mode 100644
index 00000000000..62a7cd96d15
--- /dev/null
+++ b/lib/cache/broker.php
@@ -0,0 +1,55 @@
+<?php
+/**
+ * Copyright (c) 2012 Bart Visscher <bartv@thisnet.nl>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+class OC_Cache_Broker {
+	protected $fast_cache;
+	protected $slow_cache;
+
+	public function __construct($fast_cache, $slow_cache) {
+		$this->fast_cache = $fast_cache;
+		$this->slow_cache = $slow_cache;
+	}
+
+	public function get($key) {
+		if ($r = $this->fast_cache->get($key)) {
+			return $r;
+		}
+		return $this->slow_cache->get($key);
+	}
+
+	public function set($key, $value, $ttl=0) {
+		$set_slow = strlen($value) > 8192;
+		if ($set_slow) {
+			if ($this->fast_cache->hasKey($key)) {
+				$this->fast_cache->remove($key);
+			}
+			$this->slow_cache->set($key, $value, $ttl);
+		} else {
+			$this->fast_cache->set($key, $value, $ttl);
+		}
+	}
+
+	public function hasKey($key) {
+		if ($this->fast_cache->hasKey($key)) {
+			return true;
+		}
+		return $this->slow_cache->hasKey($key);
+	}
+
+	public function remove($key) {
+		if ($this->fast_cache->remove($key)) {
+			return true;
+		}
+		return $this->slow_cache->remove($key);
+	}
+
+	public function clear(){
+		$this->fast_cache->clear();
+		$this->slow_cache->clear();
+	}
+}