SpringBoot+Redis哨兵模式的实现

cd /tmp
mkdir 7001 7002 7003

cp redis-6.2.6/redis.conf /tmp/7001
cp redis-6.2.6/redis.conf /tmp/7002
cp redis-6.2.6/redis.conf /tmp/7003

vi redise.conf

redis-cli -p 7002

REPLICAOF #{ip} 7001

mkdir s1 s2 s3

# sentinel端口
port 27001
#工作路径
dir "/tmp/s1"
# 哨兵监控的master，主从配置一样，在进行主从切换时7001会变成当前的master端口,最后的2为客观判断主节# 点下线的节点个数
sentinel monitor mymaster #{ip} 7001 2
# master或slave多长时间不能使用后标记为s_down状态
sentinel down-after-milliseconds mymaster 5000
#若sentinel在该配置值内未能完成failover操作（即故障时master/slave自动切换），
#则认为本次failover失败
sentinel failover-timeout mymaster 60000

redis-sentinel sentinel.conf

<dependency>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-web</artifactId>
     <exclusions><!-- 去掉springboot默认配置 -->
         <exclusion>
              <groupId>org.springframework.boot</groupId>
              <artifactId>spring-boot-starter-logging</artifactId>
         </exclusion>
     </exclusions>
</dependency>
<dependency>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
<dependency>
     <groupId>com.alibaba</groupId>
     <artifactId>fastjson</artifactId>
     <version>1.2.73</version>
</dependency>

spring:
  redis:
    sentinel:
      master: mymaster
      nodes:
        - #{ip}:27001
        - #{ip}:27002
        - #{ip}:27003

package com.wl.demo.config;
 
import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.support.config.FastJsonConfig;
import com.alibaba.fastjson.support.spring.FastJsonRedisSerializer;
import io.lettuce.core.ReadFrom;
import org.springframework.boot.autoconfigure.data.redis.LettuceClientConfigurationBuilderCustomizer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.StringRedisSerializer;
 
/**
 * @author wl
 * @date 2022/3/28
 */
@Configuration
public class RedisConfig {
 
    @Bean
    public LettuceClientConfigurationBuilderCustomizer lettuceClientConfigurationBuilderCustomizer() {
        return builder -> builder.readFrom(ReadFrom.REPLICA_PREFERRED);
    }
 
    @Bean
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory connectionFactory) {
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
        redisTemplate.setConnectionFactory(connectionFactory);
 
        FastJsonRedisSerializer<Object> fastJsonRedisSerializer = new FastJsonRedisSerializer<>(Object.class);
        FastJsonConfig fastJsonConfig = fastJsonRedisSerializer.getFastJsonConfig();
        SerializerFeature[] serializerFeatures = new SerializerFeature[] {SerializerFeature.WriteDateUseDateFormat, SerializerFeature.WriteMapNullValue};
        fastJsonConfig.setSerializerFeatures(serializerFeatures);
        StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
 
        redisTemplate.setKeySerializer(stringRedisSerializer);
        redisTemplate.setHashKeySerializer(stringRedisSerializer);
        redisTemplate.setHashValueSerializer(fastJsonRedisSerializer);
        redisTemplate.setValueSerializer(fastJsonRedisSerializer);
        redisTemplate.setEnableTransactionSupport(true);
 
        redisTemplate.afterPropertiesSet();
 
        return redisTemplate;
    }
}

package com.wl.demo.controller;
 
import com.wl.demo.common.result.HttpResult;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
 
/**
 * @author wl
 * @date 2022/4/14
 */
@RestController
public class TestController {
 
    private final StringRedisTemplate stringRedisTemplate;
 
    @Autowired
    public TestController(StringRedisTemplate stringRedisTemplate) {
        this.stringRedisTemplate = stringRedisTemplate;
    }
 
    @GetMapping("/set/{key}/{value}")
    public HttpResult setValue(@PathVariable("key") String key, @PathVariable("value") String value) {
        stringRedisTemplate.opsForValue().set(key, value);
        return HttpResult.success();
    }
 
    @GetMapping("/get/{key}")
    public HttpResult getValue(@PathVariable("key") String key) {
        return HttpResult.success(stringRedisTemplate.opsForValue().get(key));
    }
}