Memcache::decrement
Hi,
Be careful about multi memcached servers. It seems logical the get() methods use only one server but, what about the delete() and update() methods?
In fact, at least the delete() method perform a delete on the first server it finds!
For the test code, you can see it there:
http://pecl.php.net/bugs/bug.php?id=16810
Hope this helps someone!
Wilfried
Memcache::delete
(PECL memcache >= 0.2.0)
Memcache::delete — Delete item from the server
Description
bool Memcache::delete
( string $key
[, int $timeout
] )
Memcache::delete() deletes item with the key . If parameter timeout is specified, the item will expire after timeout seconds. Also you can use memcache_delete() function.
Parameters
- key
-
The key associated with the item to delete.
- timeout
-
Execution time of the item. If it's equal to zero, the item will be deleted right away whereas if you set it to 30, the item will be deleted in 30 seconds.
Return Values
Returns TRUE on success or FALSE on failure.
Examples
Example #1 Memcache::delete() example
<?php
/* procedural API */
$memcache_obj = memcache_connect('memcache_host', 11211);
/* after 10 seconds item will be deleted by the server */
memcache_delete($memcache_obj, 'key_to_delete', 10);
/* OO API */
$memcache_obj = new Memcache;
$memcache_obj->connect('memcache_host', 11211);
$memcache_obj->delete('key_to_delete', 10);
?>
See Also
- Memcache::set() - Store data at the server
- Memcache::replace() - Replace value of the existing item
add a note
User Contributed NotesMemcache::delete
Wilfried Loche
25-Aug-2009 09:01
25-Aug-2009 09:01
Jocke Berg
05-May-2009 10:02
05-May-2009 10:02
I was searching for a function/method in this class that would "reset" (or "update", depending on how you look at it) the timeout value for a key. I was searching my butt off when I finally figured; this is the one.
Example: You have accessed a web-page including something that should be "in-cache" for way more than 30 days (until the memcache server gets a downtime for some reason). Since the limit for having something in the cache is 30 days, this will be a problem. Simple (yet somewhat non-optimal) solution:
<?php
//How to "update" the value
if($memcache_key_exists){
$memcache_obj->delete('key', (3600*24*30));
}
?>
Have fun.