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Redis
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Dump and Load
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Stop server, push dump, restart server. Beautiful::

    ssh new-server service redis-server stop
    # -3 to copy to this server temporarly. Useful if old and new server have no
    # direct connection
    scp -3 old-server:/var/lib/redis/dump.rdb
    ssh new-server chown redis:redis /var/lib/redis/dump.rdb
    ssh new-server service redis-server start