<!-- 引入spring-data-redis组件，默认已集成Lettuce依赖SDK -->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>

<dependency>
    <groupId>io.lettuce</groupId>
    <artifactId>lettuce-core</artifactId>
    <version>6.3.0.RELEASE</version>
</dependency>

<dependency>
    <groupId>io.netty</groupId>
    <artifactId>netty-transport-native-epoll</artifactId>
    <version>4.1.100.Final</version>
    <classifier>linux-x86_64</classifier>
</dependency>


import java.time.Duration;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.connection.RedisStandaloneConfiguration;
import org.springframework.data.redis.connection.lettuce.LettuceClientConfiguration;
import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;

import io.lettuce.core.ClientOptions;
import io.lettuce.core.SocketOptions;

import org.apache.commons.pool2.impl.GenericObjectPoolConfig;
import org.springframework.data.redis.connection.lettuce.LettucePoolingClientConfiguration;

@Configuration
public class lettuceSingleConfig {
//    @Value("${tencent.redis.host}")
//    private String redisHost;
//
//    @Value("${tencent.redis.port:6379}")
//    private Integer redisPort = 6379;
//
//    @Value("${tencent.redis.database:0}")
//    private Integer redisDatabase = 0;
//
//    @Value("${tencent.redis.password:}")
//    private String redisPassword;

    @Value("${tencent.redis.connect.timeout:2000}")
    private Integer redisConnectTimeout = 2000;

    @Value("${tencent.redis.command.timeout:2000}")
    private Integer redisCommandTimeout = 2000;
    /**
     *  TCP_KEEPALIVE 配置参数
     */
    @Value("${tencent.redis.tcp.keepalive.time.idle:30}")
    private Integer redisTcpKeepaliveTimeIdle = 30;
    @Value("${tencent.redis.tcp.keepalive.time.interval:10}")
    private Integer redisTcpKeepaliveTimeInterval = 10;
    @Value("${tencent.redis.tcp.keepalive.count:3}")
    private Integer redisTcpKeepaliveCount = 3;

    /**
     * TCP_USER_TIMEOUT 解决Lettuce长时间超时问题
     */
    @Value("${tencent.redis.tcp.user.timeout:30}")
    private Integer redisTcpUserTimeout = 30;

    /**
     * pool相关参数
     */
    @Value("${tencent.redis.pool.max-wait:1000}")
    private Integer RedisPoolMaxwait = 1000;
    @Value("${tencent.redis.pool.max-active:2000}")
    private Integer RedisPoolMaxTotal = 2000;
    @Value("${tencent.redis.pool.max-idle:1000}")
    private Integer RedisPoolMaxIdle = 1000;
    @Value("${tencent.redis.pool.min-idle:500}")
    private Integer RedisPoolMinIdle = 500;

    /**
     * redisConnectionFactory以及相关参数（Host、Port、Database、Password）与 application.properties 配置方式二选一
     */
//    @Bean
//    public LettuceConnectionFactory redisConnectionFactory(LettuceClientConfiguration clientConfiguration) {
//
//        RedisStandaloneConfiguration standaloneConfiguration = new RedisStandaloneConfiguration();
//        standaloneConfiguration.setHostName(redisHost);
//        standaloneConfiguration.setPort(redisPort);
//        standaloneConfiguration.setDatabase(redisDatabase);
//        standaloneConfiguration.setPassword(redisPassword);
//
//        LettuceConnectionFactory connectionFactory = new LettuceConnectionFactory(standaloneConfiguration, clientConfiguration);
//        connectionFactory.setDatabase(redisDatabase);
//        return connectionFactory;
//    }

    @Bean
    public LettuceClientConfiguration clientConfiguration() {


        SocketOptions socketOptions = SocketOptions.builder()
                .keepAlive(SocketOptions.KeepAliveOptions.builder()
                        // 连接空闲多久开始 keepalive
                        .idle(Duration.ofSeconds(redisTcpKeepaliveTimeIdle))
                        // 两次 keepalive 间的时间间隔
                        .interval(Duration.ofSeconds(redisTcpKeepaliveTimeInterval))
                        // keepalive 几次之后断开连接
                        .count(redisTcpKeepaliveCount)
                        // 是否开启保活连接
                        .enable()
                        .build())
                .tcpUserTimeout(SocketOptions.TcpUserTimeoutOptions.builder()
                        // 解决服务端rst导致的长时间超时问题
                        .tcpUserTimeout(Duration.ofSeconds(redisTcpUserTimeout))
                        .enable()
                        .build())
                // tcp 连接超时设置
                .connectTimeout(Duration.ofMillis(redisConnectTimeout))
                .build();

        ClientOptions clientOptions = ClientOptions.builder()
                .autoReconnect(true)
                .pingBeforeActivateConnection(true)
                .cancelCommandsOnReconnectFailure(false)
                .disconnectedBehavior(ClientOptions.DisconnectedBehavior.ACCEPT_COMMANDS)
                .socketOptions(socketOptions)
                .build();

        // 创建连接池配置并关闭LIFO
        GenericObjectPoolConfig poolConfig = new GenericObjectPoolConfig();
        poolConfig.setLifo(false); // 关闭LIFO，启用FIFO模式
        poolConfig.setMaxTotal(RedisPoolMaxTotal); // 可选：设置最大连接数
        poolConfig.setMaxIdle(RedisPoolMaxIdle);  // 可选：设置最大空闲连接数
        poolConfig.setMinIdle(RedisPoolMinIdle);   // 可选：设置最小空闲连接数
        poolConfig.setMaxWait(Duration.ofMillis(RedisPoolMaxwait));

        return LettucePoolingClientConfiguration.builder()
                .poolConfig(poolConfig)
                .commandTimeout(Duration.ofMillis(redisCommandTimeout))
                .clientOptions(clientOptions)
                .build();
    }
}