Springboot2.x集成Redis集群模式

Springboot2.x集成Redis集群模式

说明

Redis集群模式是Redis高可用方案的一种实现方式，通过集群模式可以实现Redis数据多处存储，以及自动的故障转移。如果想了解更多集群模式的相关知识介绍，欢迎往上爬楼。

准备条件

pom.xml中引入相关jar

		<!-- 集成Redis -->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-data-redis</artifactId>
		</dependency>

		<!-- Jedis 客户端 -->
		<dependency>
		    <groupId>redis.clients</groupId>
		    <artifactId>jedis</artifactId>
		</dependency>

		<!-- lettuce客户端需要使用到 -->
          <dependency>
                <groupId>org.apache.commons</groupId>
                <artifactId>commons-pool2</artifactId>
           </dependency>

application.yml集群模式配置属性示例。

spring:
  redis:
    host: 192.168.8.121
    port: 6379
    password: enjoyitlife
    timeout: 30000
    jedis:
      pool:
        max-active: 256
        max-wait: 30000
        max-idle: 64
        min-idle: 32
    lettuce:
      pool:
        max-active: 256
        max-idle: 64
        max-wait: 30000
        min-idle: 32
    cluster:
      nodes:
      - 192.168.8.121:7000
      - 192.168.8.121:7001
      - 192.168.8.121:7002
      - 192.168.8.121:7003
      - 192.168.8.121:7004
      - 192.168.8.121:7005
      - 192.168.8.121:7006
      - 192.168.8.121:7007

nodes节点读取。因为nodes是集合方式，所以spring中的@value$("xxx.xxx.xx")是无法读取的，本文提供了一种获取改节点属性的方式。

RedisClusterNodesCfg.java 获取nodes节点数据的代码示例。

package top.enjoyitlife.redis;

import java.util.List;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

@Component
@ConfigurationProperties(prefix = "spring.redis.cluster")
public class RedisClusterNodesCfg {

	 	private List<String> nodes;

		public List<String> getNodes() {
			return nodes;
		}

		public void setNodes(List<String> nodes) {
			this.nodes = nodes;
		}

}

集群模式下的整合教程

Jedis客户端整合

JedisClusterConfig.java 相关配置

package top.enjoyitlife.redis.jedis;

import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Profile;
import org.springframework.data.redis.connection.RedisClusterConfiguration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.connection.RedisNode;
import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import top.enjoyitlife.redis.RedisClusterNodesCfg;

@Configuration
@Profile("JedisCluster")
public class JedisClusterConfig {

	@Autowired
	 private RedisClusterNodesCfg redisClusterNodesCfg;

	 @Bean
	 public JedisConnectionFactory redisPoolFactory()  throws Exception{
		 	RedisClusterConfiguration rcc=new RedisClusterConfiguration();
			List<String> nodesList=redisClusterNodesCfg.getNodes();
			String host=null;
			int port=0;
			for(String node:nodesList) {
				host=node.split(":")[0];
				port=Integer.valueOf(node.split(":")[1]);
				rcc.addClusterNode(new RedisNode(host,port));
			}
			return new JedisConnectionFactory(rcc);
	 }

	 @Bean
		public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory){
			RedisTemplate<String, Object> template = new RedisTemplate<String, Object>();
			template.setKeySerializer(new StringRedisSerializer());
			template.setValueSerializer(new StringRedisSerializer());
			template.setConnectionFactory(redisConnectionFactory);
			return template;
		}

}

Lettuce客户端整合

package top.enjoyitlife.redis.lettuce;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Profile;
import org.springframework.data.redis.connection.RedisClusterConfiguration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.connection.RedisNode;
import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import top.enjoyitlife.redis.RedisClusterNodesCfg;

@Configuration
@Profile("lettuceCluster")
public class LettuceClusterConfig {

	@Autowired
	 private RedisClusterNodesCfg redisClusterNodesCfg;

	@Bean
	public LettuceConnectionFactory redisConnectionFactory() {
		RedisClusterConfiguration rcc=new RedisClusterConfiguration();
		List<String> nodesList=redisClusterNodesCfg.getNodes();
		String host=null;
		int port=0;
		for(String node:nodesList) {
			host=node.split(":")[0];
			port=Integer.valueOf(node.split(":")[1]);
			rcc.addClusterNode(new RedisNode(host,port));
		}
		return new LettuceConnectionFactory(rcc);
	}

	@Bean
	public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory){
		RedisTemplate<String, Object> template = new RedisTemplate<String, Object>();
		template.setKeySerializer(new StringRedisSerializer());
		template.setValueSerializer(new StringRedisSerializer());
		template.setConnectionFactory(redisConnectionFactory);
		return template;
	}
}

Springboot通过RedisClusterConfiguration来统一了连接集群的方式，区别Jedis客户端是通过JedisConnectionFactory进行初始化，而Lettuce客户端是通过LettuceConnectionFactory初始化。

单元测试

Jedis单元测试

package top.enjoyitlife.redis.jedis;
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.core.RedisTemplate;
import org.springframework.test.context.ActiveProfiles;

@SpringBootTest
@ActiveProfiles("JedisCluster")
class JedisClusterTest {

	@Autowired
	private RedisTemplate<String, Object> redisTemplate;
	@Test
	void contextLoads() {
		String name=redisTemplate.opsForValue().get("name").toString();
		redisTemplate.opsForValue().set("hahha", "enjoyitlife2020");
		System.out.println(name);
	}
}

Lettuce 单元测试

package top.enjoyitlife.redis.lettuce;

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.core.RedisTemplate;
import org.springframework.test.context.ActiveProfiles;

@SpringBootTest
@ActiveProfiles("lettuceCluster")
class LettuceClusterTest {

	@Autowired
	private RedisTemplate<String, Object> redisTemplate;

	@Test
	void contextLoads() {
		String name = redisTemplate.opsForValue().get("name").toString();
		System.out.println(name);
	}

}

好了以上就是Springboot2.x集成Redis集群模式的代码示例，希望对你能有所帮助。谢谢阅读。