keys是不会move到别的redis集群主机的！
132.120.2.134:26000> keys time*
1) "time:12310800007000A"
132.120.2.134:26000> hgetall time:12310800007510
-> Redirected to slot [10295] located at 132.120.2.135:26001
1) "12312800000130B"
2) "565"
132.120.2.135:26001> keys time*
1) "time:12310800007510"