Redis uses sentinel master-slave switching. What should the program do?

summary

The sentry passed the surveillance master, If you find that master Failed to reply to heartbeat package , Then it will be judged as subjective offline , The Sentinels who voted more than half believed that master Subjective offline , Then confirm as master Objective offline , Then one of the Sentinels will be selected as leader, To do master Switch jobs . Switched the new master, Notify the client to connect to the new master. So here comes the question , How does the program know about the new master What's the address ? Do you need to make any changes in the application ?

Introduce dependencies

//springboot Project integration redis
<dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>

Increase the configuration

//1. Configuration is no longer directly configured redis Node address , Instead, configure the sentinel address 
//2.master Offline judgment , And choose a new master The sentry is the clearest , So just keep communicating with the sentry 
//3. It is still directly used in the program  RedisTemplate
spring:
  redis:
   // Sentinel configuration 
    sentinel: