Spring RedisTemplate : Serialise multiple Model classes into JSON.Need to use Multiple RedisTemplates?

Question

I am using Spring Redis support to save my objects in Redis.

I have several DAOs which handle different Model classes:

For example, ShopperHistoryDao

Answer 1

GenericJackson2JsonRedisSerializer should do the job

    @Bean
    public RedisTemplate redisTemplate() {
        RedisTemplate redisTemplate = new RedisTemplate();
        redisTemplate.setConnectionFactory(jedisConnectionFactory());
        redisTemplate.setKeySerializer(new StringRedisSerializer());                                           
        redisTemplate.setValueSerializer(new GenericJackson2JsonRedisSerializer());
        return redisTemplate;
    }

This will add @Class property to the JSON to understand the type, which helps Jackson to deserialize, so no need to explicitly map the model on the configuration class.

"{\"@class\":\"com.prnv.model.WhitePaper\",\"title\":\"Hey\",\"author\":{\"@class\":\"com.prnv.model.Author\",\"name\":\"Hello\"},\"description\":\"Description\"}"

In the service you can cache the model using

    @Cacheable(value = "whitePaper", key = "#title")
    public WhitePaper findWhitePaperByTitle(String title) 
    {
        WhitePaper whitePaper = repository.findByTitle(title);
        return whitePaper;
    }

Check this article: http://blog.pranavek.com/2016/12/25/integrating-redis-with-spring-application