first time user with out of memory question
perrin at elem.com
Mon Jun 12 14:54:28 UTC 2006
Mauro Nicolas Infantino wrote:
> Even with enough memory, and a memcached server only working for the
> session management, there's still a chance that some session data get
Of course. What if you get a surprise flood of traffic that fills up
the cache, maybe from a bot? What if memcached hits an obscure bug in
some library and the daemon crashes? What if your memcached server has
a hardware failure of some kind? All of your session data will be lost.
Unlike a database, there's no replication in memcached so you can't
failover with your data intact, and no disk storage that would save it
if the daemon just went down for some reason.
> I mean, maybe memcached was not designed to store sessions, but if under
> the right conditions it works ok, it could be a nice solution.
If "the right conditions" means "it's okay to run a slight risk of
losing all our session data" then go ahead. Don't kid yourself that it
can't happen though.
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