LRU semantics...
Kevin A. Burton
burton at newsmonster.org
Sun Dec 12 17:07:31 PST 2004
I can't seem to find this documented anywhere.
What happens if I want to store more keys/values that memcached can't
handle? Does it expire keys based on use as an LRU cache would do?
Google apparently thinks:
>There's an existing debug command, "stats cachedump" (perhaps not
>documented in the protocol, I don't remember - it's not meant to be
>stable or official) which allows you to list first N keys in a
>particular LRU queue (there're about 15 LRU queues, each for a different
>size class), where N could also be "all of them". This gives you a
>momentary snapshot. However, it's not a stable command, and
>its meaning/syntax will change at some point when we redesign the
>
>
>LRU structure of memcached.
>
So I guess the answer is yes...
Maybe a FAQ entry?
Kevin
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