Question - You are having multiple Memcache servers, in which one of the memcache servers fails, and it has your data, will it ever try to get key data from that one failed server?
Answer -
The data in the failed server won’t get removed, but there is a provision for auto-failure, which you can configure for multiple nodes. Fail-over can be triggered during any socket or Memcached server level errors and not during standard client errors like adding an existing key, etc.