Cache with redis cache manager, redisTemplate and multiple serializers - caching

Question

I need to cache multiple types like:
public Country findCountry(String countryName)
and:
public List<Destination> findAllDestinations(String countryName)
I am using RedisCacheManager and RedisTemplate only support only one serializer.

Answer 1

It is solved now after some research.
change spring-data-redis to 1.4.2.RELEASE
extend RedisCacheManager with your class with cache map to serializer (cacheName->serializer) and caches names
overrides the getCache method(Cache getCache(String name)) and based on cache name, set the serializer name in the redis template
use your customized cache manager
Example -
public class CustomRedisCacheManager extends RedisCacheManager
{
public static final String CACHE_NAME_DEFAULT = "default";
public static final String CACHE_NAME_COUNTRY = "country";
public static final String CACHE_NAME_DESTINATIONS = "destinations";
private Map<String, RedisCache> redisCaches = new HashMap<>();
public CustomRedisCacheManager(Map<String, RedisTemplate> redisTemplates)
{
super(redisTemplates.get(CACHE_NAME_DEFAULT), redisTemplates.keySet());
redisTemplates.keySet().stream().forEach(cacheName -> redisCaches.put(cacheName, new RedisCache(cacheName, null, redisTemplates.get(cacheName), 0)));
}
#Override
public Cache getCache(String cacheName)
{
return redisCaches.get(cacheName);
}
}
#Configuration
#EnableCaching
public class RedisConfiguration extends CachingConfigurerSupport
{
#Bean
public JedisConnectionFactory jedisConnectionFactory()
{
JedisConnectionFactory factory = new JedisConnectionFactory();
factory.setHostName(redisHostName);
factory.setPort(redisPort);
factory.setTimeout(100);
return factory;
}
#Bean
public CacheManager cacheManager()
{
Map<String, RedisTemplate> templates = new HashMap<>();
templates.put(CACHE_NAME_DEFAULT, getDefaultRedisTemplate());
templates.put(CACHE_NAME_COUNTRY, getMetadataRedisTemplate());
templates.put(CACHE_NAME_DESTINATIONS, getDestinationsRedisTemplate());
SabreRedisCacheManager sabreRedisCacheManager = new SabreRedisCacheManager(templates);
return sabreRedisCacheManager;
}
#Bean
public RedisTemplate<Object, Object> getDefaultRedisTemplate()
{
return getBaseRedisTemplate();
}
#Bean
public RedisTemplate<Object, Object> getCountryRedisTemplate()
{
RedisTemplate<Object, Object> redisTemplate = getBaseRedisTemplate();
redisTemplate.setValueSerializer(jsonRedisSerializer(Country.class));
return redisTemplate;
}
#Bean
public RedisTemplate<Object, Object> getDestinationsRedisTemplate()
{
RedisTemplate<Object, Object> redisTemplate = getBaseRedisTemplate();
redisTemplate.setValueSerializer(jsonRedisSerializer(TypeFactory.defaultInstance().constructCollectionType(List.class, Destination.class)));
return redisTemplate;
}
private RedisTemplate<Object, Object> getBaseRedisTemplate()
{
RedisTemplate<Object, Object> redisTemplate = new RedisTemplate<>();
redisTemplate.setConnectionFactory(jedisConnectionFactory());
redisTemplate.setKeySerializer(stringRedisSerializer());
redisTemplate.setHashKeySerializer(stringRedisSerializer());
redisTemplate.setValueSerializer(jsonRedisSerializer(Object.class));
return redisTemplate;
}
private Jackson2JsonRedisSerializer jsonRedisSerializer(Class type)
{
return jsonRedisSerializer(TypeFactory.defaultInstance().constructType(type));
}
private Jackson2JsonRedisSerializer jsonRedisSerializer(JavaType javaType)
{
Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(javaType);
jackson2JsonRedisSerializer.setObjectMapper(new JsonObjectMapper());
return jackson2JsonRedisSerializer;
}
}