diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index a7a544c..062cf1e 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -2,35 +2,36 @@ name: CI
 
 on:
   push:
-    branches: [ main, master ]
+    branches: [main, master]
   pull_request:
-    branches: [ main, master ]
+    branches: [main, master]
 
 jobs:
   test:
     runs-on: ubuntu-latest
 
     steps:
-    - name: Checkout code
-      uses: actions/checkout@v3
+      - name: Checkout code
+        uses: actions/checkout@v3
 
-    - name: Set up Python
-      uses: actions/setup-python@v4
-      with:
-        python-version: '3.10'
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: '3.10'
 
-    - name: Install dependencies
-      run: |
-        python -m pip install --upgrade pip
-        pip install -r requirements.txt
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt
+
+      - name: Initialize database
+        run: |
+          python init_db.py
 
-    - name: Initialize database
-      run: |
-        python init_db.py
+      - name: Run tests with pytest
+        run: |
+          pytest -v
 
-    - name: Run tests with pytest
-      run: |
-        pytest -v
   load-test:
     runs-on: ubuntu-latest
 
@@ -41,7 +42,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: "3.10"
+          python-version: '3.10'
 
       - name: Install Python dependencies
         run: |
@@ -67,4 +68,4 @@ jobs:
 
       - name: Run k6 load test on slow endpoint
         run: |
-          k6 run k6-test.js -e BASE_URL=http://127.0.0.1:8000
\ No newline at end of file
+          k6 run k6-test.js -e BASE_URL=http://127.0.0.1:8000
diff --git a/k6-test-fast.js b/k6-test-fast.js
new file mode 100644
index 0000000..d2cb454
--- /dev/null
+++ b/k6-test-fast.js
@@ -0,0 +1,24 @@
+import http from 'k6/http';
+import { check, sleep } from 'k6';
+
+export const options = {
+	stages: [
+		{ duration: '10s', target: 10 },
+		{ duration: '20s', target: 10 },
+		{ duration: '10s', target: 0 },
+	],
+	thresholds: {
+		http_req_duration: ['p(95)<500'],
+	},
+};
+
+export default function () {
+	const res = http.get('http://127.0.0.1:8000/api/posts/v2/fast');
+
+	check(res, {
+		'status is 200': (r) => r.status === 200,
+		'response time < 500ms': (r) => r.timings.duration < 500,
+	});
+
+	sleep(1);
+}
diff --git a/k6-test.js b/k6-test.js
index 67206c5..0cac119 100644
--- a/k6-test.js
+++ b/k6-test.js
@@ -1,22 +1,24 @@
-import http from "k6/http";
-import { check, sleep } from "k6";
+import http from 'k6/http';
+import { check, sleep } from 'k6';
 
 export const options = {
-  stages: [
-    { duration: "10s", target: 10 },
-    { duration: "20s", target: 10 },
-    { duration: "10s", target: 0 },
-  ],
-  thresholds: {
-    http_req_duration: ["p(95)<500"],
-  },
+	stages: [
+		{ duration: '10s', target: 10 }, // 10초 동안 10명의 가상 사용자로 증가
+		{ duration: '20s', target: 10 }, // 20초 동안 10명 유지
+		{ duration: '10s', target: 0 }, // 10초 동안 0명으로 감소
+	],
+	thresholds: {
+		http_req_duration: ['p(95)<500'], // 95%의 요청이 500ms 이내여야 함
+	},
 };
 
 export default function () {
-  const res = http.get("http://127.0.0.1:8000/api/posts/v1/slow");
-  check(res, {
-    "is status 200": (r) => r.status === 200,
-    "response time < 500ms": (r) => r.timings.duration < 500,
-  });
-  sleep(1);
+	const res = http.get('http://127.0.0.1:8000/api/posts/v1/slow');
+
+	check(res, {
+		'status is 200': (r) => r.status === 200,
+		'response time < 500ms': (r) => r.timings.duration < 500,
+	});
+
+	sleep(1);
 }