X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=include%2Fcache.php;h=3a18fe2a5a45b237a3a3b605d3a79a082786bbaf;hb=cdebdc777e38506e673864377ce17a5af91dd8a1;hp=082974c61a907f8a42e593f88383dd586b585701;hpb=00c342e13d833fd215e5dc03a508e1abe660fe21;p=friendica.git

diff --git a/include/cache.php b/include/cache.php
index 082974c61a..3a18fe2a5a 100644
--- a/include/cache.php
+++ b/include/cache.php
@@ -2,28 +2,70 @@
 	/**
 	 *  cache api
 	 */
-	 
+
 	class Cache {
-		public static function get($key){
-			$r = q("SELECT `v` FROM `cache` WHERE `k`='%s'",
+		public static function get($key) {
+			/*if (function_exists("apc_fetch") AND function_exists("apc_exists"))
+				if (apc_exists($key))
+					return(apc_fetch($key));*/
+
+			$r = q("SELECT `v` FROM `cache` WHERE `k`='%s' limit 1",
 				dbesc($key)
 			);
-			
-			if (count($r)) return $r[0]['v'];
+
+			if (count($r)) {
+				/*if (function_exists("apc_store"))
+					apc_store($key, $r[0]['v'], 600);*/
+
+				return $r[0]['v'];
+			}
 			return null;
 		}
-		
+
 		public static function set($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($value),
+					dbesc(datetime_convert()));
+
+			/*if (function_exists("apc_store"))
+				apc_store($key, $value, 600);*/
+
 		}
-		
+
+
+/*
+ *
+ * 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($r)) {
+ *				q("UPDATE `cache` SET `v` = '%s', `updated = '%s' WHERE `k` = '%s'",
+ *					dbesc($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'",
-				dbesc(datetime_convert('UTC','UTC',"now - 30 days")));			
+				dbesc(datetime_convert('UTC','UTC',"now - 30 days")));
 		}
-		
+
 	}
-	 
+