每隔1秒ping3次
[redis@redis01 ~]$ redis-cli -h 192.168.20.201 -p 7003 -i 1 -r 3 ping
PONG
PONG
PONG
模拟复制进程
[redis@redis01 7001]$ redis-cli -h 192.168.20.201 -p 7002 --slave
SYNC with master, discarding 176 bytes of bulk transfer...
SYNC done. Logging commands from master.
"PING"
"PING"
"SELECT","0"
"set","a","haitian"
"PING"
"PING"
"PING"
"PING"
别的回话执行的命令在窗口输出就可以显示出来
查找大的键值，可能是系统瓶颈
[redis@redis01 7001]$ redis-cli -h 192.168.20.201 -p 7002 --bigkeys
# Scanning the entire keyspace to find biggest 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).
[00.00%] Biggest string found so far 'a' with 7 bytes
-------- summary -------
Sampled 1 keys in the keyspace!
Total key length in bytes is 1 (avg len 1.00)
Biggest string found 'a' has 7 bytes
1 strings with 7 bytes (100.00% of keys, avg size 7.00)
0 lists with 0 items (00.00% of keys, avg size 0.00)
0 hashs with 0 fields (00.00% of keys, avg size 0.00)
0 streams with 0 entries (00.00% of keys, avg size 0.00)
0 sets with 0 members (00.00% of keys, avg size 0.00)
0 zsets with 0 members (00.00% of keys, avg size 0.00)
测试网络延迟
[redis@redis01 7001]$ redis-cli -h 192.168.20.202 -p 7001 --latency
min: 0, max: 30, avg: 0.62 (621 samples)^C
[redis@redis01 7001]$ redis-cli -h 192.168.20.202 -p 7001 --latency
min: 0, max: 109, avg: 0.92 (2791 samples)^C
实时获取Redis的重要统计信
[redis@redis01 7001]$ redis-cli -h 192.168.20.202 -p 7001 --stat
------- data ------ --------------------- load -------------------- - child -
keys mem clients blocked requests connections
0 2.01M 1 0 6259 (+0) 55
0 2.01M 1 0 6261 (+2) 55
0 2.01M 1 0 6263 (+2) 55
0 2.01M 1 0 6265 (+2) 55
0 2.01M 1 0 6267 (+2) 55
查看内存使用
192.168.20.202:7001> set c haitian
OK
192.168.20.202:7001> memory usage c
(integer) 52
