PHP Daemon marks Memcache as failed every few days
nathan at pbwiki.com
Tue May 22 15:56:20 UTC 2007
Are you setting data which is 'around 1 Mb' when serialized? You
might be going over the 'max bucket size' every now and then. I've
seen that happen when using otherwise reasonable defaults in php --
client libs essentially go dark for the remainder of their lives when
they get a NOT_STORED or SERVER_ERROR message. It's bad for web
clients but awful with a long-running command line program.
What is strlen(serialize($oGraph)) ?
On May 22, 2007, at 2:01 AM, Iain Bapty wrote:
> Dear All,
> I've developed a PHP Daemon application which retrieves data from a
> web service every 5 seconds and saves the data using Memcache. The
> application has been in development for a week with the daemon
> running solidly for nearly 7 days. Over those 7 days, the daemon
> has terminated a few times due to a loss of connectivity to the
> Notice: Memcache::set(): marked server 'localhost:11211' as failed
> in D:\AJAX3\daemon.php on line 44
> The following line is used to add data to the Memcache.
> $memcache->set('Graph', $oGraph, false, 10)
> Note that the 5-second loop does not reconnect to Memcache on each
> iteration. An initial connection is made when the daemon is started
> and this connection is reused for each loop. Would it be better to
> reconnect to Memcache every 5 seconds?
> The Memcached is running as a Windows service and there isn't
> anything in the Windows Event Viewer to suggest that the daemon has
> The error handling in the daemon is currently being revised so it
> will gracefully handle this situation and reconnect to the
> Memcache. However, I am planning on relying on the Memcache so any
> comments on how to debug this issue would be very much appreciated.
> I'm running:
> PHP 5.2.1
> Memcache extension taken from http://pecl4win.php.net/ext.php/
> Memcached 1.2.1 ( http://jehiah.cz/projects/memcached-win32/)
> Running on Windows XP
More information about the memcached