Better performance with memcached cluster or local memcaches?

Posted by Nicholas Tolley Cottrell on Server Fault See other posts from Server Fault or by Nicholas Tolley Cottrell
Published on 2011-11-26T10:52:51Z Indexed on 2011/11/26 17:55 UTC
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memcached

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centos

I have a small cluster of servers balancing a Java web app. Currently I have 3 memcached servers caching data and all web apps shares all 3 memcached instances.

I often get strange slowdowns and timeouts to some of the memcacheds and I wondering if there is a good way of analyzing the performance.

I am wondering whether my iptables rules (or some other system limitation) are blocking/slowing connections. I am considering reconfiguring the web apps so that they only query the memcached process on their own localhost.

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