springboot2.x采用lettuce整合redis集群

约定不等于承诺〃 2022-11-20 06:00 442阅读 0赞

### 文章目录 ###

*  1 springboot2.x采用lettuce整合redis集群
 *   *  1.1 pom依赖
     *  1.2 配置文件（properties或yml）
     *  1.3 代码类
     *   *  1.3.1 配置类
         *  1.3.2 测试类

# 1 springboot2.x采用lettuce整合redis集群 #

1 概念说明

> springboot1.x系列中使用的是jedis, springboot2.x使用的是Lettuce。  
> 关于jedis跟lettuce的区别：
> 
>  *  Lettuce 和 Jedis 都是Redis的client，都可以连接redis server。
>  *  Jedis在多线程环境下是非线程安全的，这个时候只有使用连接池，为每个Jedis实例增加物理连接。
>  *  Lettuce的连接基于Netty，连接实例（StatefulRedisConnection）可以在多个线程间并发访问，是线程安全的，这个也是可伸缩的设计，一个连接实例不够的情况也可以按需增加连接实例。

2 参考网址

*  [https://51dev.com/java/42905][https_51dev.com_java_42905]
 *  [https://www.cnblogs.com/enjoyitlife/p/12057404.html][https_www.cnblogs.com_enjoyitlife_p_12057404.html]
 *  [https://www.cnblogs.com/stupidMartian/p/12092578.html][https_www.cnblogs.com_stupidMartian_p_12092578.html]
 *  [https://blog.csdn.net/u010199866/article/details/80705797][https_blog.csdn.net_u010199866_article_details_80705797]
 *  [https://blog.csdn.net/weixin\_40623736/article/details/98097708][https_blog.csdn.net_weixin_40623736_article_details_98097708]
 *  [http://www.manongjc.com/article/3453.html][http_www.manongjc.com_article_3453.html]

## 1.1 pom依赖 ##

<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
       </dependency>
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-pool2</artifactId>
        </dependency>

## 1.2 配置文件（properties或yml） ##

properties配置

spring.redis.timeout=30000
    spring.redis.lettuce.pool.max-active=256
    spring.redis.lettuce.pool.max-idle=64
    spring.redis.lettuce.pool.max-wait=30000
    spring.redis.lettuce.pool.min-idle=32
    spring.redis.cluster.max-redirects=3
    spring.redis.cluster.nodes=127.0.0.1:6379,127.0.0.1:6380,127.0.0.1:6381,127.0.0.1:6382,127.0.0.1:6383,127.0.0.1:6384

yml配置

spring:
      redis:
        timeout: 30000
        lettuce:
          pool:
            max-active: 256
            max-idle: 64
            max-wait: 30000
            min-idle: 32
        cluster:
          max-redirects: 3  # 获取失败 最大重定向次数
          nodes:
          - 127.0.0.1:6379
          - 127.0.0.1:6380
          - 127.0.0.1:6381
          - 127.0.0.1:6382
          - 127.0.0.1:6383
          - 127.0.0.1:6384

## 1.3 代码类 ##

### 1.3.1 配置类 ###

import org.springframework.boot.autoconfigure.AutoConfigureAfter;
    import org.springframework.boot.autoconfigure.data.redis.RedisAutoConfiguration;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
    import org.springframework.data.redis.core.RedisTemplate;
    import org.springframework.data.redis.serializer.StringRedisSerializer;
    
    @Configuration
    @AutoConfigureAfter(RedisAutoConfiguration.class)
    public class RedisConfig {
        @Bean
        public RedisTemplate<String, Object> redisTemplate(LettuceConnectionFactory redisConnectionFactory) {
            RedisTemplate<String, Object> template = new RedisTemplate<>();
            template.setKeySerializer(new StringRedisSerializer());
            template.setValueSerializer(new StringRedisSerializer());
            template.setConnectionFactory(redisConnectionFactory);
            return template;
        }
    }

### 1.3.2 测试类 ###

import org.apache.commons.pool2.impl.GenericObjectPoolConfig;
    import org.junit.jupiter.api.Test;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.boot.test.context.SpringBootTest;
    import org.springframework.data.redis.connection.RedisNode;
    import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
    import org.springframework.data.redis.connection.lettuce.LettucePoolingClientConfiguration;
    import org.springframework.data.redis.core.RedisTemplate;
    import org.springframework.data.redis.serializer.RedisSerializer;
    
    import java.util.Set;
    
    @SpringBootTest
    class LettuceClusterTest {
        @Autowired
        private RedisTemplate<String, Object> redisTemplate;
    
        @Test
        void contextLoads() {
            redisTemplate.opsForValue().set("name", "hello world");
            String name = redisTemplate.opsForValue().get("name").toString();
            System.out.println(name);
    
            System.out.println("》》》》》》》》》》》获取配置信息");
            RedisSerializer<?> keySerializer = redisTemplate.getKeySerializer();
            System.out.println(keySerializer);
            LettuceConnectionFactory connectionFactory = (LettuceConnectionFactory) redisTemplate.getConnectionFactory();
            Set<RedisNode> clusterNodes = connectionFactory.getClusterConfiguration().getClusterNodes();
            System.out.println(clusterNodes);
            GenericObjectPoolConfig poolConfig = ((LettucePoolingClientConfiguration) connectionFactory.getClientConfiguration()).getPoolConfig();
            System.out.println(poolConfig);
        }
    }

[https_51dev.com_java_42905]: https://51dev.com/java/42905
[https_www.cnblogs.com_enjoyitlife_p_12057404.html]: https://www.cnblogs.com/enjoyitlife/p/12057404.html
[https_www.cnblogs.com_stupidMartian_p_12092578.html]: https://www.cnblogs.com/stupidMartian/p/12092578.html
[https_blog.csdn.net_u010199866_article_details_80705797]: https://blog.csdn.net/u010199866/article/details/80705797
[https_blog.csdn.net_weixin_40623736_article_details_98097708]: https://blog.csdn.net/weixin_40623736/article/details/98097708
[http_www.manongjc.com_article_3453.html]: http://www.manongjc.com/article/3453.html