diff --git a/backend/docker-compose.yml b/backend/docker-compose.yml
new file mode 100644
index 0000000..40e2d51
--- /dev/null
+++ b/backend/docker-compose.yml
@@ -0,0 +1,10 @@
+#version: "3.8"
+
+services:
+  k6:
+    build:
+      context: ./k6
+      dockerfile: Dockerfile
+    container_name: k6-test
+    volumes:
+      - ./k6:/app
diff --git a/backend/k6/Dockerfile b/backend/k6/Dockerfile
new file mode 100644
index 0000000..2ab263c
--- /dev/null
+++ b/backend/k6/Dockerfile
@@ -0,0 +1,8 @@
+# ./k6/Dockerfile
+FROM grafana/k6:latest
+
+WORKDIR /app
+
+COPY ./script.js .
+
+ENTRYPOINT ["k6", "run", "script.js"]
diff --git a/backend/k6/script.js b/backend/k6/script.js
new file mode 100644
index 0000000..8acd9fa
--- /dev/null
+++ b/backend/k6/script.js
@@ -0,0 +1,43 @@
+import http from 'k6/http';
+import { sleep, check } from 'k6';
+
+// ✅ init 단계에서 미리 파일 열기 (전역 스코프)
+const file1 = open('/app/test1.png', 'b');
+const file2 = open('/app/test2.png', 'b');
+const file3 = open('/app/test3.png', 'b');
+
+// 파일 배열
+const imageFiles = [
+    { name: 'test1.png', content: file1 },
+    { name: 'test2.png', content: file2 },
+    { name: 'test3.png', content: file3 },
+];
+
+// 테스트 옵션
+export let options = {
+    vus: 100,
+    duration: '10s',
+};
+
+export default function () {
+    // 랜덤 이미지 선택
+    const randomIndex = Math.floor(Math.random() * imageFiles.length);
+    const image = imageFiles[randomIndex];
+
+    const data = {
+        postId: '5',
+        'images[0]': http.file(file1, 'test1.png'),
+        'images[1]': http.file(file2, 'test2.png'),
+        'images[2]': http.file(file3, 'test3.png'),
+    };
+
+
+
+    const res = http.patch('http://host.docker.internal:8080/api/images/post/update', data);
+
+    check(res, {
+        '✅ 상태 코드 200': (r) => r.status === 200,
+    });
+
+    sleep(1);
+}
diff --git a/backend/src/main/java/com/example/booktree/global/config/RedisConfig.java b/backend/src/main/java/com/example/booktree/global/config/RedisConfig.java
index 97f9e40..fd7ecc1 100644
--- a/backend/src/main/java/com/example/booktree/global/config/RedisConfig.java
+++ b/backend/src/main/java/com/example/booktree/global/config/RedisConfig.java
@@ -20,23 +20,23 @@ public class RedisConfig {
     @Value("${spring.data.redis.password:}") // password가 비어있을 수도 있으니까 기본값은 빈 문자열로
     private String redisPassword;
 
-    @Bean
-    public RedisConnectionFactory redisConnectionFactory() {
-        LettuceConnectionFactory factory = new LettuceConnectionFactory(redisHost, redisPort);
-        if (!redisPassword.isBlank()) {
-            factory.setPassword(redisPassword);
-        }
-        return factory;
-    }
-
 //    @Bean
 //    public RedisConnectionFactory redisConnectionFactory() {
-//        return new LettuceConnectionFactory(); // localhost:6379 기본 설정
-//
-//        // return new LettuceConnectionFactory("127.0.0.1", 6379); -> 커스터마이징
-//
+//        LettuceConnectionFactory factory = new LettuceConnectionFactory(redisHost, redisPort);
+//        if (!redisPassword.isBlank()) {
+//            factory.setPassword(redisPassword);
+//        }
+//        return factory;
 //    }
 
+    @Bean
+    public RedisConnectionFactory redisConnectionFactory() {
+        return new LettuceConnectionFactory(); // localhost:6379 기본 설정
+
+        // return new LettuceConnectionFactory("127.0.0.1", 6379); -> 커스터마이징
+
+    }
+
         @Bean
     public StringRedisTemplate redisTemplate(RedisConnectionFactory connectionFactory) {
         return new StringRedisTemplate(connectionFactory);
diff --git a/backend/src/main/java/com/example/booktree/global/config/SecurityConfigBookTree.java b/backend/src/main/java/com/example/booktree/global/config/SecurityConfigBookTree.java
index 6777bdc..5b9f299 100644
--- a/backend/src/main/java/com/example/booktree/global/config/SecurityConfigBookTree.java
+++ b/backend/src/main/java/com/example/booktree/global/config/SecurityConfigBookTree.java
@@ -44,7 +44,8 @@ public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Excepti
                                 "/h2-console/**",
                                 "/api/users",
                                 "/api/v1/users/find/**",
-                                "/api/v1/users/get/profile/**"
+                                "/api/v1/users/get/profile/**",
+                                "/api/images/**"
 
                         ).permitAll()
                         //무중단 배포 추가, 이메일 추가
diff --git a/backend/src/main/java/com/example/booktree/global/image/service/ImageService.java b/backend/src/main/java/com/example/booktree/global/image/service/ImageService.java
index 07ad614..17b30a6 100644
--- a/backend/src/main/java/com/example/booktree/global/image/service/ImageService.java
+++ b/backend/src/main/java/com/example/booktree/global/image/service/ImageService.java
@@ -15,11 +15,13 @@
 import java.util.List;
 import java.util.stream.Collectors;
 import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 import org.springframework.web.multipart.MultipartFile;
 
 @Service
 @RequiredArgsConstructor
+@Slf4j
 public class ImageService {
 
     private final ImageRepository imageRepository;
@@ -87,6 +89,7 @@ public List<Image> uploadPostImage(Long postId, List<MultipartFile> multipartFil
         List<Image> postImageList = post.getImageList();
 
 
+
         //이미지 객체에서 Url만 추출
         List<String> imageUrlList = new ArrayList<>();
         for (Image image : postImageList) {
diff --git a/backend/src/main/java/com/example/booktree/global/utils/S3Uploader.java b/backend/src/main/java/com/example/booktree/global/utils/S3Uploader.java
index d3a1905..2a1eb08 100644
--- a/backend/src/main/java/com/example/booktree/global/utils/S3Uploader.java
+++ b/backend/src/main/java/com/example/booktree/global/utils/S3Uploader.java
@@ -119,7 +119,7 @@ public List<String> autoImagesUploadAndDelete(List<String> beforePostImages, Lis
                                 .map(MultipartFile.class::cast)
                                 .findFirst()
                                 .orElse(null);
-                        //System.out.println("!! name : " + upload.getOriginalFilename());
+                        System.out.println("!! name : " + upload.getOriginalFilename());
                         try {
                             uploadFile(upload);
                         } catch (IOException e) {