Has anyone ever noticed any weird behaviour with regards to the shopping cart in magento when apc caching is enabled?
I have a situation where it looks as though extra items and/or different items are being added when the user adds something.
Its very strange and aparantly random but only seems to occur when we have apc enabled.
This answer touches on what might be going on:
Memcached vs APC which one should I choose?
Simply move to memcache and your troubles should be resolved.
You may want to try and clear APC's cache, both system cache and user cache.
Note that there is a difference between regular APC cache from CLI and Web based entries, and from what I've gathered you can't simply call it from CLI it has to be from a web request like so:
system('wget --spider --quiet http://localhost/apc/clear_apc_cache.php');
clear_apc_cache.php would contain:
apc_clear_cache('user');
More details: http://php.net/manual/en/function.apc-clear-cache.php
and note the Cache type Parameter:
If cache_type is "user", the user cache will be cleared; otherwise, the system cache (cached files) will be cleared.
