chore: Redis 관련 설정 (#4)

src/main/java/com/project/mapdagu/MapdaguApplication.java

@@ -2,9 +2,11 @@
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cache.annotation.EnableCaching;
 import org.springframework.data.jpa.repository.config.EnableJpaAuditing;
 
 @EnableJpaAuditing
+@EnableCaching
 @SpringBootApplication
 public class MapdaguApplication {
 

src/main/java/com/project/mapdagu/config/RedisConfig.java

@@ -0,0 +1,57 @@
+package com.project.mapdagu.config;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.cache.annotation.CachingConfigurerSupport;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.redis.cache.RedisCacheConfiguration;
+import org.springframework.data.redis.cache.RedisCacheManager;
+import org.springframework.data.redis.connection.RedisConnectionFactory;
+import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.data.redis.repository.configuration.EnableRedisRepositories;
+import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
+import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
+import org.springframework.data.redis.serializer.RedisSerializationContext;
+import org.springframework.data.redis.serializer.StringRedisSerializer;
+
+@Configuration
+@EnableRedisRepositories
+public class RedisConfig extends CachingConfigurerSupport {
+    @Value("${spring.data.redis.port}")
+    private int port;
+
+    @Value("${spring.data.redis.host}")
+    private String host;
+
+    @Bean
+    public RedisConnectionFactory redisConnectionFactory() {
+        return new LettuceConnectionFactory(host, port);
+    }
+
+    @Bean
+    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory){
+        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
+        redisTemplate.setConnectionFactory(redisConnectionFactory);
+        redisTemplate.setKeySerializer(new StringRedisSerializer());
+        redisTemplate.setValueSerializer(new Jackson2JsonRedisSerializer<>(String.class));
+        return redisTemplate;
+    }
+
+    // Redis Cache 적용을 위한 RedisCacheManager 설정
+    @Bean
+    public RedisCacheManager redisCacheManager(RedisConnectionFactory redisConnectionFactory) {
+        RedisCacheConfiguration redisCacheConfiguration = RedisCacheConfiguration.defaultCacheConfig()
+                .serializeKeysWith(RedisSerializationContext
+                        .SerializationPair.fromSerializer(new StringRedisSerializer())) // StringRedisSerializer: binary 데이터로 저장되기 때문에 이를 String 으로 변환
+                .serializeValuesWith(RedisSerializationContext
+                        .SerializationPair.fromSerializer(new GenericJackson2JsonRedisSerializer()));
+
+
+        return RedisCacheManager
+                .RedisCacheManagerBuilder
+                .fromConnectionFactory(redisConnectionFactory)
+                .cacheDefaults(redisCacheConfiguration)
+                .build();
+    }
+}