Redis添加多个database，指定Key使用String的序列化方式

Redis添加多个database，指定Key使用String的序列化方式 背景

项目上线后，发现B服务一直取不到A服务的缓存，最后发现是两个服务用的库不一样。

解决方案

@Configuration
public class KeyStringRedisAutoConfiguration {
    @Value("${reids.database2}")
    private int db2;
    @Value("${redis.host}")
    private String host;
    @Value("${redis.port}")
    private int port;
    @Value("${redis.password}")
    private String password;
    @Value("${spring.jedis.pool.max-active}")
    private int maxActive;
    @Value("${spring.jedis.pool.max-idle}")
    private int maxIdle;
    @Value("${spring.jedis.pool.min-idle}")
    private int minIdle;
    @Value("${spring.jedis.pool.timeout}")
    private int maxWait;
    
    @Bean
    public GenericObjectPoolConfig getPoolConfig(){
        // 配置redis连接池
        GenericObjectPoolConfig poolConfig = new GenericObjectPoolConfig();
        poolConfig.setMaxTotal(maxActive);
        poolConfig.setMaxIdle(maxIdle);
        poolConfig.setMinIdle(minIdle);
        poolConfig.setMaxWaitMillis(maxWait);
        return poolConfig;
    }

  
    @Bean("DB2RedisTemplate")
    public RedisTemplate creatRedisTemplate() {
        RedisTemplate redisTemplate = new RedisTemplate<>();
        redisTemplate.setConnectionFactory(getRedisConnectionFactory(db2));
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.setValueSerializer( new JdkSerializationRedisSerializer());
       // redisTemplate.setConnectionFactory(factory);

        return redisTemplate;
    }

    private RedisConnectionFactory getRedisConnectionFactory(int database) {
        // 构建工厂对象
        RedisStandaloneConfiguration config = new RedisStandaloneConfiguration();
        config.setHostName(host);
        config.setPort(port);
        config.setPassword(RedisPassword.of(password));
        LettucePoolingClientConfiguration clientConfig = LettucePoolingClientConfiguration.builder()
                .poolConfig(getPoolConfig())
                .build();
        LettuceConnectionFactory factory = new LettuceConnectionFactory(config, clientConfig);
        // 设置使用的redis数据库
        factory.setDatabase(database);
        // 重新初始化工厂
        factory.afterPropertiesSet();
        return factory;
    }

}