feat: Redis 설정 추가

Author: jay-so

build.gradle

@@ -26,9 +26,9 @@ dependencies {
     implementation 'org.springframework.boot:spring-boot-starter-web'
     compileOnly 'org.projectlombok:lombok'
     developmentOnly 'org.springframework.boot:spring-boot-devtools'
-    runtimeOnly 'com.h2database:h2'
     annotationProcessor 'org.projectlombok:lombok'
     testImplementation 'org.springframework.boot:spring-boot-starter-test'
+    implementation 'org.springframework.boot:spring-boot-starter-data-redis'
 }
 
 tasks.named('test') {

src/main/java/com/systemdesign/slidingwindowcounter/common/config/RedisConfig.java

@@ -0,0 +1,33 @@
+package com.systemdesign.slidingwindowcounter.common.config;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonTypeInfo;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.redis.connection.ReactiveRedisConnectionFactory;
+import org.springframework.data.redis.core.ReactiveRedisTemplate;
+import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
+import org.springframework.data.redis.serializer.RedisSerializationContext;
+import org.springframework.data.redis.serializer.RedisSerializer;
+
+@Configuration
+public class RedisConfig {
+
+    @Bean
+    public ReactiveRedisTemplate<String, Object> reactiveRedisTemplate(ReactiveRedisConnectionFactory connectionFactory) {
+        ObjectMapper objectMapper = new ObjectMapper();
+        objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
+        objectMapper.activateDefaultTyping(objectMapper.getPolymorphicTypeValidator(), ObjectMapper.DefaultTyping.EVERYTHING, JsonTypeInfo.As.PROPERTY);
+
+        RedisSerializer<Object> redisSerializer = new GenericJackson2JsonRedisSerializer(objectMapper);
+
+        RedisSerializationContext<String, Object> context = RedisSerializationContext
+                .<String, Object>newSerializationContext(RedisSerializer.string())
+                .value(redisSerializer)
+                .hashValue(redisSerializer)
+                .build();
+
+        return new ReactiveRedisTemplate<>(connectionFactory, context);
+    }
+}

src/main/resources/application.properties

@@ -0,0 +1,5 @@
+spring:
+  data:
+    redis:
+      host: localhost
+      port: 6379