###########
redis-cli --hotkeys
[work@a8-dba-cloud-db00.wh cdrom]$ ./redis_7001/bin/redis-cli -a jJAV0kTokNb8iZvwfqniCxmFZEsbOH5n -c -p 7001 -h 192.168.31.33 --hotkeys
Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.
# Scanning the entire keyspace to find hot keys as well as
# average sizes per key type. You can use -i 0.1 to sleep 0.1 sec
# per 100 SCAN commands (not usually needed).
Error: ERR An LFU maxmemory policy is not selected, access frequency not tracked. Please note that when switching between policies at runtime LRU and LFU data will take some time to adjust.
# 需要在线更改下内存淘汰策略
[work@a8-dba-cloud-db00.wh ~]$ ./redis_7001/bin/redis-cli -c -a jJAV0kTokNb8iZvwfqniCxmFZEsbOH5n -h 192.168.31.33 -p 7001
Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.
192.168.31.33:7001> config set maxmemory-policy volatile-lfu
OK
192.168.31.33:7001>
[work@a8-dba-cloud-db00.wh cdrom]$ ./redis_7001/bin/redis-cli -a jJAV0kTokNb8iZvwfqniCxmFZEsbOH5n -c -p 7001 -h 192.168.31.33 --hotkeys
Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.
# Scanning the entire keyspace to find hot keys as well as
# average sizes per key type. You can use -i 0.1 to sleep 0.1 sec
# per 100 SCAN commands (not usually needed).
-------- summary -------
Sampled 615176 keys in the keyspace!
[work@a8-dba-cloud-db00.wh cdrom]$
