/**
* cache api
*/
-
+
class Cache {
- public static function get($key){
+ public static function get($key) {
+
$r = q("SELECT `v` FROM `cache` WHERE `k`='%s' limit 1",
dbesc($key)
);
-
- if (count($r)) return $r[0]['v'];
+
+ if (count($r))
+ return $r[0]['v'];
+
return null;
}
-
- public static function set($key,$value) {
- $r = q("SELECT * FROM `cache` WHERE `k`='%s' limit 1",
- dbesc($key)
- );
- if(count($r)) {
- q("UPDATE `cache` SET `v` = '%s', `updated = '%s' WHERE `k` = '%s' limit 1",
- dbesc($value),
- dbesc(datetime_convert()),
- dbesc($key));
- }
- else {
- q("INSERT INTO `cache` (`k`,`v`,`updated`) VALUES ('%s','%s','%s')",
+
+ public static function set($key,$value, $duration = CACHE_MONTH) {
+
+ q("REPLACE INTO `cache` (`k`,`v`,`expire_mode`,`updated`) VALUES ('%s','%s',%d,'%s')",
dbesc($key),
dbesc($value),
+ intval($duration),
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($r)) {
+ * q("UPDATE `cache` SET `v` = '%s', `updated = '%s' WHERE `k` = '%s'",
+ * dbesc($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")));
+ q("DELETE FROM `cache` WHERE `updated` < '%s' AND `expire_mode` = %d",
+ dbesc(datetime_convert('UTC','UTC',"now - 30 days")), intval(CACHE_MONTH));
+
+ q("DELETE FROM `cache` WHERE `updated` < '%s' AND `expire_mode` = %d",
+ dbesc(datetime_convert('UTC','UTC',"now - 7 days")), intval(CACHE_WEEK));
+
+ q("DELETE FROM `cache` WHERE `updated` < '%s' AND `expire_mode` = %d",
+ dbesc(datetime_convert('UTC','UTC',"now - 1 days")), intval(CACHE_DAY));
+
+ q("DELETE FROM `cache` WHERE `updated` < '%s' AND `expire_mode` = %d",
+ dbesc(datetime_convert('UTC','UTC',"now - 1 hours")), intval(CACHE_HOUR));
}
-
+
}
-
+