From c7774d7f23efa9cef55409281958a1f87854e9b0 Mon Sep 17 00:00:00 2001
From: Markus Staab <markus.staab@redaxo.de>
Date: Sun, 6 Jan 2013 16:06:26 +0100
Subject: [PATCH] Update _posts/10-03-01-Object-Caching.md

Adjusted caching example-pattern, so it will not trigger 2 cache-lookups
---
 _posts/10-03-01-Object-Caching.md | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/_posts/10-03-01-Object-Caching.md b/_posts/10-03-01-Object-Caching.md
index b812eb0..f00e8b4 100644
--- a/_posts/10-03-01-Object-Caching.md
+++ b/_posts/10-03-01-Object-Caching.md
@@ -32,12 +32,13 @@ Example logic using APC:
 {% highlight php %}
 <?php
 // check if there is data saved as 'expensive_data' in cache
-if (apc_fetch('expensive_data') === false) {
-    // data is not in cache; save expensive call for later use
-    apc_add('expensive_data', get_expensive_data());
+$data = apc_fetch('expensive_data');
+if ($data === false) {
+    // data is not in cache; save result of expensive call for later use
+    apc_add('expensive_data', $data = get_expensive_data());
 }
 
-print_r(apc_fetch('expensive_data'));
+print_r($data);
 {% endhighlight %}
 
 Learn more about popular object caching systems: