X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=include%2Fcache.php;h=360c4acbdbadd285225f848149a3d2c778bc8576;hb=d1a0206cdd1a65b08feb16197fe2236c8e1a8037;hp=082974c61a907f8a42e593f88383dd586b585701;hpb=4218e3f4945af7101c626852bda09d2c591b8e0c;p=friendica.git

diff --git a/include/cache.php b/include/cache.php
index 082974c61a..360c4acbdb 100644
--- 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)
 			);
 			
@@ -14,11 +14,40 @@
 		}
 		
 		public static function set($key,$value) {
-			q("INSERT INTO `cache` VALUES ('%s','%s','%s')",
-				dbesc($key),
-				dbesc($value),
-				dbesc(datetime_convert()));
+
+			q("REPLACE INTO `cache` (`k`,`v`,`updated`) VALUES ('%s','%s','%s')",
+					dbesc($key),
+					dbesc($value),
+					dbesc(datetime_convert()));
 		}
+
+		
+/* 
+ *
+ * Leaving this legacy code temporaily to see how REPLACE fares 
+ * as opposed to non-atomic checks when faced with fast moving key duplication.
+ * As a MySQL extension it isn't portable, but we're not yet very portable.
+ */
+
+/*
+ *			$r = q("SELECT * FROM `cache` WHERE `k`='%s' limit 1",
+ *				dbesc($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(){
 			q("DELETE FROM `cache` WHERE `updated` < '%s'",