memory overflow?

patrick k. patrick at
Thu Sep 20 11:33:06 UTC 2007

thanks for the answer.

Am 20.09.2007 um 07:36 schrieb dormando:

> How big are your items? If they're huge...

the items are small.

> Memcached doesn't return memory to the OS after an item expires.  
> It's also a fancy LRU, so it'll deal with not having enough memory  
> to cache all of your objects. Watch the evictions stat and your  
> cache hits stats.

hmm, what is LRU?

> If the former goes up and the latter goes down, trim your data or  
> get more memcached's.

I see. Guess I´ll have to wait till memcache reaches the limit (which  
is 1 GB, in my case).


> -Dormando
> patrickk wrote:
>> sorry if this is a stupid question, but I don´t have much  
>> experience using memcache.
>> we launched a site 2 days ago where we use memcache with the  
>> django-framework.
>> we have about 10 pages in the cache.
>> now, the cache status is at:
>> # memory usage: 238.7 MB
>> # keys in cache: 5880 of 46353
>> # cache hits: 263048 of 288603: 91%
>> i´m a bit worried about the memory usage and the huge amount of  
>> keys in the cache.
>> we have only 1GB for memcache altogether and about 3 days after  
>> launching the site,
>> 240 MB are gone already.
>> do I have to worry about the stats or is this intended caching- 
>> behaviour?
>> thanks,
>> patrick

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