refactor: Redis 설정 리팩토링

Author: jay-so

Diff for: build.gradle

@@ -25,7 +25,6 @@ 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'

Diff for: src/main/java/com/systemdesign/fixedwindowcounter/common/config/RedisConfig.java

@@ -4,22 +4,37 @@
 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.GenericToStringSerializer;
 import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
 import org.springframework.data.redis.serializer.StringRedisSerializer;
 
 @Configuration
 public class RedisConfig {
 
+//    @Bean
+//    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory connectionFactory) {
+//        RedisTemplate<String, Object> template = new RedisTemplate<>();
+//        template.setConnectionFactory(connectionFactory);
+//        template.setKeySerializer(new StringRedisSerializer());
+//        template.setHashKeySerializer(new StringRedisSerializer());
+//
+//        Jackson2JsonRedisSerializer<Object> serializer = new Jackson2JsonRedisSerializer<>(Object.class);
+//        template.setValueSerializer(serializer);
+//        template.setHashValueSerializer(serializer);
+//
+//        return template;
+//    }
+
     @Bean
-    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory connectionFactory) {
-        RedisTemplate<String, Object> template = new RedisTemplate<>();
+    public RedisTemplate<String, Long> redisTemplate(RedisConnectionFactory connectionFactory) {
+        RedisTemplate<String, Long> template = new RedisTemplate<>();
         template.setConnectionFactory(connectionFactory);
         template.setKeySerializer(new StringRedisSerializer());
         template.setHashKeySerializer(new StringRedisSerializer());
 
-        Jackson2JsonRedisSerializer<Object> serializer = new Jackson2JsonRedisSerializer<>(Object.class);
-        template.setValueSerializer(serializer);
-        template.setHashValueSerializer(serializer);
+        GenericToStringSerializer<Long> longSerializer = new GenericToStringSerializer<>(Long.class);
+        template.setValueSerializer(longSerializer);
+        template.setHashValueSerializer(longSerializer);
 
         return template;
     }

Diff for: src/main/resources/application.properties

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