Memcached failover?

[Prateek Mathur]

Does memcached support failover for the several memcached instances that are
run.
Memcached is a global cache where entries of the cached are *uniquely*
distributed over a number of memcached instances(servers).
So if there is a strong requirement of having a failover system,would
memcached fit in this system? In other words, if a particular memcached
server goes down,can those server's keys and values be available on some
other running instance?

Fail over systems generally make redundant entries on different instances of
servers.So how can memcached fit in such a model if needed?

Thanks
Prateek.
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