Redis(三)-redis-cli命令使用指南
redis-cli是一个终端程序，用于向redis服务器发送命令和读取服务端响应。
它包括两种模式：交互模式 和 命令模式。
发送命令：
# 执行incr操作
redis-cli INCR myCounter
# 重定向输出
redis-cli INCR myCounter > /tmp/output.txt
# 输出原始的结果（去掉自带的类型提示）
redis-cli --raw INCR myCounter
字符串引用和转义：
\n \t ’
SET MYKEY "HELLO\nworld";
GET MYKEY
Host, port, password, and database:
redis-cli -h redis15.localnet.org -p 6390 PING
redis-cli -a myUnguessablePazzzzzword123 PING
# 指定数据库
redis-cli -n 1 INCR mycounter
输入流：
redis-cli -x SET mykey < /etc/services
重复运行：
redis-cli -r 5 INCR mycouner
csv output:
redis-cli --csv lrange mylist 0 -1
运行lua脚本：
cat /tmp/script.lua
return redis.call('SET',KEYS[1],ARGV[1])
# 逗号前后需要有空格
redis-cli --eval /tmp/script.lua location:hastings:temp , 23
切换主机：
127.0.0.1:6379> connect metal 6379
metal:6379> PING
PONG
扫描大Key:
redis-cli --bigkeys
[00.00%] Biggest string found so far 'key-419' with 3 bytes
[05.14%] Biggest list found so far 'mylist' with 100004 items
[35.77%] Biggest string found so far 'counter:__rand_int__' with 6 bytes
[73.91%] Biggest hash found so far 'myobject' with 3 fields
-------- summary -------
Sampled 506 keys in the keyspace!
Total key length in bytes is 3452 (avg len 6.82)
Biggest string found 'counter:__rand_int__' has 6 bytes
Biggest list found 'mylist' has 100004 items
Biggest hash found 'myobject' has 3 fields
504 strings with 1403 bytes (99.60% of keys, avg size 2.78)
1 lists with 100004 items (00.20% of keys, avg size 100004.00)
0 sets with 0 members (00.00% of keys, avg size 0.00)
1 hashs with 3 fields (00.20% of keys, avg size 3.00)
0 zsets with 0 members (00.00% of keys, avg size 0.00)
监控模式：
redis-cli monitor
OK
1460100081.165665 [0 127.0.0.1:51706] "set" "shipment:8000736522714:status" "sorting"
1460100083.053365 [0 127.0.0.1:51707] "get" "shipment:8000736522714:status"
查看redis时延：
redis-cli --latency
远程备份:
redis-cli --rdb /tmp/dump.rdb
SYNC sent to master, writing 13256 bytes to '/tmp/dump.rdb'
Transfer finished with success.
副本检查：
该功能是用于开发人员和调试人员检查主节点给副节点发送数据是否有问题。
$ redis-cli --replica
SYNC with master, discarding 13256 bytes of bulk transfer...
SYNC done. Logging commands from master.
"PING"
"SELECT","0"
"SET","last_name","Enigk"
"PING"
"INCR","mycounter"
LRU模拟：
测试使用管道，会对服务器造成压力，不要在生产环境使用。
redis-cli --lru-test 1000