redis-faina 是由Instagram 开发并开源的一个Redis 查询分析小工具。
redis-faina通过解析redis的MONITOR命令的输出，从而对redis实例进行性能诊断的工具。
该工具使用虽然简单，但是功能还是很不错，对于定位线上redis性能问题，确实是一把利器。

1. 通过管道从stdin读取redis monitor 输出，解析

# yum install git 

# git clone https://github.com/facebookarchive/redis-faina.git 

# cd redis-faina 

# redis-cli -h xx.xx.xx.xx   -p 6379  -a 'XXX'  monitor  | head -n  10000 |  ./redis-faina.py

2. 将redis monitor 输出重定向到文件，然后读取解析

# yum install git 

# git clone https://github.com/facebookarchive/redis-faina.git 

# cd redis-faina 

# redis-cli -h xx.xx.xx.xx  -p 6379  -a 'XXX'  monitor  > m.log 

另开窗口，查询输出日志行数，到达自己目标行，就中断掉
# wc  -l  m.log 

# ./redis-faina.py m.log

Overall Stats
========================================
Lines Processed  10000
Commands/Sec     274.73
Top Prefixes   #按照key的前缀统计
========================================
testcache-rendsord-lang        1684(16.84%)
testcache-inuanGoods-id        1090(10.90%)
testcache-riceroup-cat_id      307 (3.07%)
testcache-ategorynfo-id        190 (1.90%)
testcache-ategoryey-lang       189 (1.89%)
testcache-earchtrremplate-id  61  (0.61%)
testcache-riceroup-id          15  (0.15%)
testcache-otordata-lang       9   (0.09%)
Top Keys     #请求最频繁的key
========================================
testcache-acebookhareandsave  2373(23.73%)
testcache-hippingFee           2198(21.98%)
testcache-rendsord-lang:en    1464(14.64%)
testcache-ountryurrency       1181(11.81%)
testcache-inuanoods          442 (4.42%)
testcache-ategoryey-lang:     183 (1.83%)
testcache-rendsord-lang:es    124 (1.24%)
testcache-inuanoods-id:68    114 (1.14%)
Top Commands     # 执行最频繁的命令
========================================
GET      9957(99.57%)
AUTH     13  (0.13%)
COMMAND  13  (0.13%)
SADD     10  (0.10%)
info     5   (0.05%)
SET      1   (0.01%)
Command Time (microsecs)    # 命令执行时长
========================================
Median  2309.0
75%     4959.75
90%     8447.0
99%     18482.0
Heaviest Commands (microsecs)    #耗时最多的命令
========================================
GET      36281717.75
COMMAND  85269.25
SADD     17985.75
info     10698.5
SET      3228.0
AUTH     625.5
Slowest Calls     #执行最慢的命令
========================================
179962.0  "GET" "testcache-hippingee"
62659.0   "GET" "testcache-romotionullateeduce"
44902.0   "GET" "testcache-hippingee"
40305.25  "GET" "testcache-hippingee"
39559.0   "GET" "testcache-hippingee"
36831.25  "GET" "testcache-hippingee"
33852.0   "GET" "testcache-hippingee"
33501.0   "GET" "testcache-hippingee"

参考

redis 热 key 发现以及解决办法
https://blog.csdn.net/hellozhxy/article/details/119773333

redis中BigKey、HotKey的发现与处理
https://developer.aliyun.com/article/788271

redis 热 key 发现以及解决办法
https://blog.csdn.net/hellozhxy/article/details/119773333

redis monitor
https://redis.io/commands/monitor/

redis性能分析工具redis-faina
https://developer.aliyun.com/article/511562
https://www.cnblogs.com/zhoubaojian/articles/7866506.html

redis运行状态图形化监控工具 — RedisLive
http://t.zoukankan.com/Leo_wl-p-5870006.html

nkrode/RedisLive
https://github.com/nkrode/RedisLive