redisson用来做分布式锁
lettuce用来做多线程操作

1、gradle配置文件

[group: 'io.lettuce', name: 'lettuce-core', version: '6.1.9.RELEASE'],
[group: 'org.redisson', name: 'redisson-spring-boot-starter', version: '3.26.1'],

dependencies {
    api ("org.springframework.boot:spring-boot-starter-data-redis")
    api "org.springframework.boot:spring-boot-starter-cache"
    api 'io.lettuce:lettuce-core'
    api 'org.redisson:redisson-spring-boot-starter'
}

2、redisson配置

@Configuration
public class RedissonConfig {

    @Autowired
    private RedisProperties redisProperties;

    @Bean
    @ConditionalOnProperty(prefix = "spring.redis", name = "cluster")
    public Redisson redisson() {
        //redisson版本是3.5，集群的ip前面要加上“redis://”，不然会报错，3.2版本可不加
        List<String> clusterNodes = new ArrayList<>();
        List<String> list = new ArrayList<>();
        if(redisProperties.getCluster() != null) {
            list.addAll(redisProperties.getCluster().getNodes());
        } else {
            list.add(redisProperties.getHost()+":"+redisProperties.getPort());
        }
        for (int i = 0; i < list.size(); i++) {
            clusterNodes.add("redis://" + list.get(i));
        }
        Config config = new Config();
        ClusterServersConfig clusterServersConfig = config.useClusterServers()
                .addNodeAddress(clusterNodes.toArray(new String[clusterNodes.size()]));
        if(StringUtils.isNotBlank(redisProperties.getPassword())) {
            clusterServersConfig.setPassword(redisProperties.getPassword());//设置密码
        }
        return (Redisson) Redisson.create(config);
    }

    @Bean
    @ConditionalOnProperty(prefix = "spring.redis", name = "host")
    public Redisson redissonSingleServer() {
        Config config = new Config();
        config.useSingleServer().setAddress("redis://" + redisProperties.getHost() + ":" + redisProperties.getPort());
        if(StringUtils.isNotBlank(redisProperties.getPassword())) {
            config.useSingleServer().setPassword(redisProperties.getPassword());
        }
        return (Redisson) Redisson.create(config);
    }
}

3、lettuce配置

@Slf4j
@Configuration
public class RedisLettuceConfig {

    @Autowired
    private RedisProperties redisProperties;

    @Bean
    public LettuceConnectionFactory redisConnectionFactory() {
        //通用配置
        GenericObjectPoolConfig genericObjectPoolConfig = new GenericObjectPoolConfig();
        genericObjectPoolConfig.setMaxIdle(redisProperties.getLettuce().getPool().getMaxIdle());
        genericObjectPoolConfig.setMinIdle(redisProperties.getLettuce().getPool().getMinIdle());
        genericObjectPoolConfig.setMaxTotal(redisProperties.getLettuce().getPool().getMaxActive());

        //支持自适应集群拓扑刷新和静态刷新源
        ClusterTopologyRefreshOptions clusterTopologyRefreshOptions = ClusterTopologyRefreshOptions.builder()
                .enablePeriodicRefresh(Duration.ofSeconds(5))
                .enableAllAdaptiveRefreshTriggers()
                .adaptiveRefreshTriggersTimeout(Duration.ofSeconds(10))
                //.enablePeriodicRefresh(Duration.ofSeconds(10))
                .build();

        ClusterClientOptions clusterClientOptions = ClusterClientOptions.builder().timeoutOptions(TimeoutOptions.enabled(Duration.ofSeconds(30)))
                //.autoReconnect(false)  是否自动重连
                //.pingBeforeActivateConnection(Boolean.TRUE)
                //.cancelCommandsOnReconnectFailure(Boolean.TRUE)
                //.disconnectedBehavior(ClientOptions.DisconnectedBehavior.REJECT_COMMANDS)
                .topologyRefreshOptions(clusterTopologyRefreshOptions).build();

        LettuceClientConfiguration lettuceClientConfiguration = LettucePoolingClientConfiguration.builder()
                .poolConfig(genericObjectPoolConfig)
                //.readFrom(ReadFrom.NEAREST)
                .clientOptions(clusterClientOptions).build();

        return newConnectionFactory(lettuceClientConfiguration);
    }

    public LettuceConnectionFactory newConnectionFactory(LettuceClientConfiguration lettuceClientConfiguration) {
        if(redisProperties.getCluster() == null) {
            RedisStandaloneConfiguration redisClusterConfiguration = new RedisStandaloneConfiguration();
            //单机redis
            redisClusterConfiguration.setHostName(redisProperties.getHost());
            redisClusterConfiguration.setDatabase(redisProperties.getDatabase());
            redisClusterConfiguration.setPort(redisProperties.getPort());
            redisClusterConfiguration.setPassword(redisProperties.getPassword());
            return new LettuceConnectionFactory(redisClusterConfiguration, lettuceClientConfiguration);
        } else {
            // 集群模式
            Set<RedisNode> nodes = new HashSet<>();
            for (String split : redisProperties.getCluster().getNodes()) {
                String[] split1 = split.split(":");
                nodes.add(new RedisNode(split1[0].trim(), Integer.parseInt(split1[1])));
            }
            RedisClusterConfiguration redisClusterConfiguration = new RedisClusterConfiguration();
            redisClusterConfiguration.setClusterNodes(nodes);
            redisClusterConfiguration.setPassword(redisProperties.getPassword());
            return new LettuceConnectionFactory(redisClusterConfiguration, lettuceClientConfiguration);
        }

    }
}