redis-faina 是由Instagram 開發(fā)并開源的一個(gè)Redis 查詢分析小工具。
redis-faina通過解析redis的MONITOR命令的輸出，從而對redis實(shí)例進(jìn)行性能診斷的工具。
該工具使用雖然簡單，但是功能還是很不錯(cuò)，對于定位線上redis性能問題，確實(shí)是一把利器。

通過管道從stdin讀取redis monitor 輸出，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

將redis monitor 輸出重定向到文件，然后讀取解析

# 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 

另開窗口，查詢輸出日志行數(shù)，到達(dá)自己目標(biāo)行，就中斷掉
# wc  -l  m.log 

# ./redis-faina.py m.log

Overall Stats
========================================
Lines Processed  10000
Commands/Sec     274.73
Top Prefixes   #按照key的前綴統(tǒng)計(jì)
========================================
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     #請求最頻繁的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     # 執(zhí)行最頻繁的命令
========================================
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)    # 命令執(zhí)行時(shí)長
========================================
Median  2309.0
75%     4959.75
90%     8447.0
99%     18482.0
Heaviest Commands (microsecs)    #耗時(shí)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     #執(zhí)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"