feat: Redis 기반 캐시 기능 추상화 및 ObjectMapper 유틸 추가

Author: dnzp75

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

@@ -0,0 +1,38 @@
+package com.example.log4u.common.config.redis;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.core.type.TypeReference;
+import com.fasterxml.jackson.databind.DeserializationFeature;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializationFeature;
+import com.fasterxml.jackson.datatype.jdk8.Jdk8Module;
+import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
+import com.fasterxml.jackson.module.paramnames.ParameterNamesModule;
+
+public class ObjectMapperFactory {
+
+    public static ObjectMapper objectMapper = new ObjectMapper()
+            .configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false)
+            .configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false)
+            .setSerializationInclusion(JsonInclude.Include.NON_NULL)
+            .registerModule(new JavaTimeModule())
+            .registerModule(new ParameterNamesModule())
+            .registerModule(new Jdk8Module());
+
+    public static String writeValueAsString(Object value) {
+        try {
+            return objectMapper.writeValueAsString(value);
+        } catch (JsonProcessingException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public static <T> T readValue(String value, TypeReference<T> typeReference) {
+        try {
+            return objectMapper.readValue(value, typeReference);
+        } catch (JsonProcessingException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}

src/main/java/com/example/log4u/common/config/redis/ObjectMapperFactory.java

@@ -0,0 +1,34 @@
+package com.example.log4u.common.config.redis;
+
+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.StringRedisSerializer;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
+
+import lombok.RequiredArgsConstructor;
+
+@Configuration
+@RequiredArgsConstructor
+public class RedisConfig {
+
+	private final RedisConnectionFactory redisConnectionFactory;
+
+	@Bean
+	public RedisTemplate<String, String> redisTemplate() {
+		RedisTemplate<String, String> template = new RedisTemplate<>();
+		template.setConnectionFactory(redisConnectionFactory);
+		template.setKeySerializer(new StringRedisSerializer());
+		template.setValueSerializer(new StringRedisSerializer());
+		return template;
+	}
+
+	@Bean
+	public ObjectMapper objectMapper() {
+		return ObjectMapperFactory.objectMapper;
+	}
+}

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

@@ -0,0 +1,12 @@
+package com.example.log4u.common.infra.cache;
+
+import java.time.Duration;
+
+public interface CacheManager {
+
+    void cache(String key, String value, Duration ttl);
+
+    String get(String key);
+
+    void evict(String key);
+}

src/main/java/com/example/log4u/common/infra/cache/CacheManager.java

@@ -0,0 +1,30 @@
+package com.example.log4u.common.infra.cache;
+
+import java.time.Duration;
+import java.util.List;
+import java.util.Objects;
+
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.data.redis.core.script.DefaultRedisScript;
+import org.springframework.stereotype.Component;
+
+import lombok.RequiredArgsConstructor;
+
+@Component
+@RequiredArgsConstructor
+public class RedisCacheManagerImpl implements CacheManager {
+
+    private final RedisTemplate<String, String> redisTemplate;
+
+    public void cache(String key, String value, Duration ttl) {
+        redisTemplate.opsForValue().set(key, value, ttl);
+    }
+
+    public String get(String key) {
+        return redisTemplate.opsForValue().get(key);
+    }
+
+    public void evict(String key) {
+        redisTemplate.delete(key);
+    }
+}