This smells like you're configuring your clients wrong... The client list must be _exactly the same_ on every app server. Don't reorder them or put "localhost" in there.
It's also possible that appserv2 can't reach one of the memcached daemons as well, and is putting keys on the only available server. On Sun, 20 Jun 2010, Shaulian wrote: > Relating to Memcached FAQ (http://code.google.com/p/memcached/wiki/ > FAQ#How_does_memcached_work?), it is clear that when you use more than > on server for memcache, each key exist only one time, and only on one > server. > > We are using 2 servers for memcached and 3 servers for app. > Lately we noticed that when we request the same key from AppServ1, it > returns DIFFERENT value when requesting it from AppServ2. > We tried to delete the key from BackOffice in AppServ1, but it was > still exist on AppServ2. > All the above clearly points that the key exists on each server. > > We're using .NET memcached client library (http://sourceforge.net/ > projects/memcacheddotnet/). > > Anyone experienced such a thing ? >
