How to monitor redis performance in real time

Foreword:

Redis is a key-value storage system written by Salvatore Sanfilippo. It is a cross-platform non-relational database.

Redis is an open source key-value (Key-Value) storage database written in ANSI C language, complying with the BSD protocol, supporting network, memory-based, distributed, and optional persistence, and provides multiple language API.

Main content:

1. How to view monitoring

After installing Redis, you can use the built-in connection client redis-cli to connect to the Redis service. Use the info command. All redis running status can be viewed

[root@node1 ~]# redis-cli info all #View redis information

The next step is to know and analyze each parameter The meaning of Status information

(Learning video sharing:

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connected_clients 
◦已连接客户端的数量（不包括通过从属服务器连接的客户端）


• client_longest_output_list 
◦当前连接的客户端当中，最长的输出列表


• client_longest_input_buf 
◦当前连接的客户端当中，最大输入缓存


• blocked_clients 
◦正在等待阻塞命令（BLPOP、BRPOP、BRPOPLPUSH）的客户端的数量

Use the following command to monitor the current dbindex information of redis

used_memory 
◦当前使用的内存信息，以字节为单位


• used_memory_rss 
◦当前操作系统分配给 Redis 的内存


• used_memory_peak 
◦Redis 的内存消耗峰值，以字节为单位


• used_memory_peak_human 
◦以人类可读的格式返回 Redis 的内存消耗峰值


• mem_fragmentation_ratio 
◦ used_memory_rss  和  used_memory  之间的比率

Reference address ：

redis tutorial: http://www.runoob.com/redis/redis-tutorial.htmlredis Baidu Encyclopedia: https://baike.baidu.com/item/Redis /6549233?fr=aladdin

redis official website: https://redis.io/

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