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use mysql replace on cache items

This commit is contained in:
friendica 2012-05-02 16:27:19 -07:00
parent 8e1437ca8b
commit 3ecde2d72f
1 changed files with 30 additions and 12 deletions
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42
include/cache.php
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@ -14,22 +14,40 @@
} }
public static function set($key,$value) { public static function set($key,$value) {
$r = q("SELECT * FROM `cache` WHERE `k`='%s' limit 1",
dbesc($key) q("REPLACE INTO `cache` (`k`,`v`,`updated`) VALUES ('%s','%s','%s')",
);
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($key),
dbesc($value), dbesc($value),
dbesc(datetime_convert())); 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(){ public static function clear(){
q("DELETE FROM `cache` WHERE `updated` < '%s'", q("DELETE FROM `cache` WHERE `updated` < '%s'",