一、配置代码
注意：说明：
注意：配置 Lettuce 连接池的 LIFO = false（即采用 FIFO 队列模式），否则在云环境 VIP 场景下会因连接响应时间差异导致负载不均，连接池失效的问题。
注意：1. 默认的 LIFO（后进先出）模式会优先复用最新归还的连接，使部分响应快的连接成为“热连接”，而响应慢的连接长期闲置，导致后端实际负载倾斜。
注意：2. 连接池失效：当某条连接因响应慢被暂时弃用，LIFO 机制会加剧新请求集中分配给少数活跃连接，放大单点瓶颈风险。
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;@Configurationpublic 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(); }}