通过docker-compose启动一个redis服务器
docker-compose.yml文件的内容如下:
version: '3'
services:
redis:
image: redis
ports:
- 6379:6379
docker-compose up -d 启动redis容器
在服务器上安装redis-cli工具
这里我是ubuntu服务器,centos用yum代替apt安装
执行:apt install redis-tools安装
连接redis并存入一个bigkey
执行redis-cli连接redis服务器,这里没有设置密码。
此处我使用图片转化为base64后的代码,大小为240kb,正常超过10kb的key我们就认为是bigkey。
set testkey "data:image/png;base64,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"
如下图:
查询redis中的大key
执行redis-cli --bigkeys:(在数据多的生产环境要慎用,会扫描redis寻找bigkey造成redis服务卡顿),这个命令会列出Redis中所有的key及其对应的大小,看到我们找到了刚才的bigkey,有4081个byte。
RMD查看
在RMD工具中,连接redis后点击分析内存即可查看key占用的内存大小。