redis 查看binary redis 查看key大小

方法一(推荐)使用rbdtools   高效

#安装rdbtools

yum -y install gcc

yum -y install epel-release

yum -y install python-pip

yum install python-devel

不安装会报错Python.h：没有那个文件或目录

pip install rdbtools

rdb -c memory  /usr/local/services/redis/dbbak/dump.rdb > /tmp/result.csv

然后把csv拿出来看就可以  也可以不输出到csv  直接打印在屏幕上

 

 

方法二#使用自带的工具

redis-cli -a pdabc  --bigkeys

 

全部结果大致如下  相比rdbtools速度很慢。

# 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 hash   found so far 's_9329222' with 3 fields
[00.00%] Biggest string found so far 'url_http://mini.eastday.com/mobile/170722090206890.html?qid=sgllq&ch=east_sogou_push&pushid=13' with 8 bytes
[00.00%] Biggest string found so far 'foo' with 40 bytes
[00.00%] Biggest hash   found so far 's_9329084' with 4 fields
[00.23%] Biggest zset   found so far 'region_hot_菏泽地' with 625 members
[00.23%] Biggest zset   found so far 'region_hot_葫芦岛' with 914 members
[00.47%] Biggest string found so far 'top_notice_list' with 135193 bytes
[00.73%] Biggest zset   found so far 'region_hot_自贡' with 2092 members
[01.90%] Biggest hash   found so far 'uno_facet_2018-12-20' with 59 fields
[11.87%] Biggest zset   found so far 'region_hot_上海' with 2233 members
[27.05%] Biggest set    found so far 'blacklist_set_key' with 31832 members
[73.87%] Biggest string found so far 'PUSH_NEWS' with 3104237 bytes
[86.18%] Biggest zset   found so far 'region_hot_北京' with 2688 members

 

-------- summary -------

 

Sampled 4263 keys in the keyspace!
Total key length in bytes is 174847 (avg len 41.02)
 
Biggest string found 'PUSH_NEWS' has 3104237 bytes
Biggest    set found 'blacklist_set_key' has 31832 members
Biggest   hash found 'uno_facet_2018-12-20' has 59 fields
Biggest   zset found 'region_hot_北京' has 2688 members
 
1616 strings with 3771161 bytes (37.91% of keys, avg size 2333.64)
0 lists with 0 items (00.00% of keys, avg size 0.00)
1 sets with 31832 members (00.02% of keys, avg size 31832.00)
2353 hashs with 7792 fields (55.20% of keys, avg size 3.31)
293 zsets with 333670 members (06.87% of keys, avg size 1138.81)