chore: 클러스터 캐시 전용 RedisTemplate 설정 추가

Author: dnzp75

src/main/java/com/example/log4u/common/config/RedisConfig.java

@@ -1,12 +1,21 @@
 package com.example.log4u.common.config;
 
+import java.util.List;
+
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.data.redis.connection.RedisConnectionFactory;
 import org.springframework.data.redis.core.RedisTemplate;
 import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
+import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
 import org.springframework.data.redis.serializer.StringRedisSerializer;
 
+import com.example.log4u.domain.map.dto.response.DiaryClusterResponseDto;
+import com.fasterxml.jackson.databind.JavaType;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import software.amazon.awssdk.thirdparty.jackson.core.type.TypeReference;
+
 @Configuration
 public class RedisConfig {
 
@@ -20,4 +29,19 @@ public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory connec
 
 		return template;
 	}
+
+	@Bean
+	public RedisTemplate<String, List<DiaryClusterResponseDto>> diaryClusterRedisTemplate(
+		RedisConnectionFactory connectionFactory,
+		ObjectMapper objectMapper
+	) {
+		RedisTemplate<String, List<DiaryClusterResponseDto>> template = new RedisTemplate<>();
+		template.setConnectionFactory(connectionFactory);
+		template.setKeySerializer(new StringRedisSerializer());
+
+		JavaType javaType = objectMapper.getTypeFactory().constructCollectionType(List.class, DiaryClusterResponseDto.class);
+		Jackson2JsonRedisSerializer<List<DiaryClusterResponseDto>> serializer = new Jackson2JsonRedisSerializer<>(objectMapper, javaType);
+		template.setValueSerializer(serializer);
+		return template;
+	}
 }