Redis的主从模式-Redis学习笔记五-优快云博客

本文链接：https://blog.youkuaiyun.com/everything1209/article/details/51263945

本文介绍如何通过配置Redis实现主从复制模式，减轻单台服务器负载。主服务器负责写操作，从服务器则处理读请求。文章详细展示了如何配置从服务器，并提到了从服务器默认禁止写入操作的特点。

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为了降低每个redis服务器的负载，可以多设置几个，并做主从模式。一个服务器负载“写”(添加、修改、删除)数据，其他服务器负载“读”数据

主服务器数据会“自动”同步给从服务器

配置redis.conf文件，配置为192.168.39.159的从服务器：

################################# REPLICATION #################################

# Master-Slave replication. Use slaveof to make a Redis instance a copy of
# another Redis server. Note that the configuration is local to the slave
# so for example it is possible to configure the slave to save the DB with a
# different interval, or to listen to another port, and so on.
#
# slaveof <masterip> <masterport>

 slaveof 192.168.1.3 6379

配置文件修改后，重启redis服务(杀死旧进程，启动新进程)：

从服务器默认禁止写入操作(可以修改如下图参数使得其可以写入数据)：

# Note: read only slaves are not designed to be exposed to untrusted clients
# on the internet. It's just a protection layer against misuse of the instance.
# Still a read only slave exports by default all the administrative commands
# such as CONFIG, DEBUG, and so forth. To a limited extend you can improve
# security of read only slaves using 'rename-command' to shadow all the
# administrative / dangerous commands.
slave-read-only yes