如何隔离Spring Boot应用程序Redis和Spring Boot会话全局Redis

据我所知，spring boot和spring session为我们提供了一站式自动配置，但是当我的应用程序使用会话redis和应用程序缓存redis时，不是同一个redis服务器； 我该如何配置呢，非常感谢您的回复！

事实上，默认情况下，spring-session 和 spring-cache 实际上都是由 spring-boot 配置的RedisConnectionFactory豆命名为connectionFactory。 有两种方法可以做到这一点。

1. make spring-session使用不同的connectionFactorybean 实例，并保留 spring-cache 使用默认值connectionFactory。下面是一个示例解决方案：

   @Configuration
   public class RedisHttpSessionConfig {
   
       @Bean
       StringRedisSerializer stringRedisSerializer() {
           return new StringRedisSerializer();
       }
   
       @Bean
       RedisConnectionFactory redisHttpSessionConnectionFactory() {
           RedisConnectionFactory redisHttpSessionConnectionFactory = null;
           // ... add your codes here
           return redisHttpSessionConnectionFactory;
       }
   
       @Bean
       public RedisTemplate<Object, Object> sessionRedisTemplate(
               RedisConnectionFactory redisHttpSessionConnectionFactory) {
           RedisTemplate<Object, Object> template = new RedisTemplate<Object, Object>();
           template.setKeySerializer(new StringRedisSerializer());
           template.setHashKeySerializer(new StringRedisSerializer());
           template.setValueSerializer(new GenericJackson2JsonRedisSerializer());
           template.setDefaultSerializer(GenericJackson2JsonRedisSerializer());
           template.setConnectionFactory(redisHttpSessionConnectionFactory);
           return template;
       }
   }
   

2. make spring-cache使用不同的connectionFactorybean 实例，并保留 spring-session 使用默认值connectionFactory。下面是一个示例解决方案：

   @Configuration
   public class RedisCacheConfig {
   
       @Bean
       StringRedisSerializer stringRedisSerializer() {
           return new StringRedisSerializer();
       }
   
       @Bean
       RedisConnectionFactory redisCacheConnectionFactory() {
            RedisConnectionFactory redisCacheConnectionFactory = null;
            // ... add your codes here
            return redisCacheConnectionFactory;
       }
   
       @Bean
       RedisTemplate<Object, Object> redisTemplate(RedisConnectionFactory redisCacheConnectionFactory) {
           RedisTemplate<Object, Object> redisTemplate = new RedisTemplate();
           redisTemplate.setConnectionFactory(redisCacheConnectionFactory);
           redisTemplate.setKeySerializer(this.stringRedisSerializer());
           redisTemplate.setValueSerializer(new GenericJackson2JsonRedisSerializer());
           return redisTemplate;
       }
   
       @Bean(name = "stringRedisTemplate")
       public StringRedisTemplate stringRedisTemplate(RedisConnectionFactory redisCacheConnectionFactory) throws UnknownHostException {
           StringRedisTemplate stringRedisTemplate = new StringRedisTemplate();
           stringRedisTemplate.setConnectionFactory(redisCacheConnectionFactory);
           stringRedisTemplate.setKeySerializer(this.stringRedisSerializer());
           stringRedisTemplate.setValueSerializer(new GenericJackson2JsonRedisSerializer());
           return stringRedisTemplate;
       }
   
       @Bean
       CacheManager cacheManager(RedisTemplate redisTemplate) {
           RedisCacheManager cacheManager = new RedisCacheManager(redisTemplate);
           cacheManager.setDefaultExpiration(600l);
           cacheManager.setUsePrefix(true);
           return cacheManager;
       }
   }