激活 Lettuce 心跳机制（GPT生成版-待测试）

要激活 Lettuce 心跳机制，可以按照以下步骤配置 Spring Data Redis：

1. 在配置文件（如 application.properties 或 application.yml）中添加自定义的心跳时间间隔：

spring.redis.lettuce.shutdown-timeout=100
spring.redis.lettuce.ping-command-timeout=1000

2. 在 RedisConfig 类中，修改 lettuceConnectionFactory() 方法，更新 ClientOptions 的配置以应用心跳间隔：

@Configuration
public class RedisConfig {

    // ... 其他配置变量

    @Value("${spring.redis.lettuce.shutdown-timeout}")
    private Duration shutdownTimeout;

    @Value("${spring.redis.lettuce.ping-command-timeout}")
    private Duration pingCommandTimeout;

    @Bean
    public RedisConnectionFactory lettuceConnectionFactory() {
        // ... 连接池配置

        ClientOptions clientOptions = ClientOptions.builder()
                .socketOptions(SocketOptions.builder()
                        .connectTimeout(timeout)
                        .build())
                .timeoutOptions(TimeoutOptions.builder()
                        .pingCommandTimeout(pingCommandTimeout)
                        .build())
                .build();
        
        RedisStandaloneConfiguration redisStandaloneConfiguration = new RedisStandaloneConfiguration(host, port);
        redisStandaloneConfiguration.setPassword(RedisPassword.of(password));
        LettucePoolingClientConfiguration lettucePoolingClientConfiguration = LettucePoolingClientConfiguration.builder()
                .clientOptions(clientOptions)
                .poolConfig(config)
                .shutdownTimeout(shutdownTimeout)
                .build();
        return new LettuceConnectionFactory(redisStandaloneConfiguration, lettucePoolingClientConfiguration);
    }
}