From dae0c1ded2bdba958ada3ba6f44b018cc959fbeb Mon Sep 17 00:00:00 2001
From: friendica <info@friendica.com>
Date: Tue, 24 Jan 2012 17:04:49 -0800
Subject: [PATCH] more robust cache api handling (was throwing errors on
 occasion)

---
 include/cache.php | 21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

diff --git a/include/cache.php b/include/cache.php
index 082974c61a..3c8a3f7138 100755
--- a/include/cache.php
+++ b/include/cache.php
@@ -5,7 +5,7 @@
 	 
 	class Cache {
 		public static function get($key){
-			$r = q("SELECT `v` FROM `cache` WHERE `k`='%s'",
+			$r = q("SELECT `v` FROM `cache` WHERE `k`='%s' limit 1",
 				dbesc($key)
 			);
 			
@@ -14,10 +14,21 @@
 		}
 		
 		public static function set($key,$value) {
-			q("INSERT INTO `cache` VALUES ('%s','%s','%s')",
-				dbesc($key),
-				dbesc($value),
-				dbesc(datetime_convert()));
+			$r = q("SELECT * FROM `cache` WHERE `k`='%s' limit 1",
+				dbesc($key)
+			);
+			if(count($r)) {
+				q("UPDATE `cache` SET `v` = '%s', `updated = '%s' WHERE `k` = '%s' limit 1",
+					dbesc($value),
+					dbesc(datetime_convert()),
+					dbesc($key));
+			}
+			else {
+				q("INSERT INTO `cache` (`k`,`v`,`updated`) VALUES ('%s','%s','%s')",
+					dbesc($key),
+					dbesc($value),
+					dbesc(datetime_convert()));
+			}
 		}
 		
 		public static function clear(){