diff --git a/backend/brewbucks/tests/test_views.py b/backend/brewbucks/tests/test_views.py
index 517d550..d8e2a87 100644
--- a/backend/brewbucks/tests/test_views.py
+++ b/backend/brewbucks/tests/test_views.py
@@ -167,10 +167,10 @@ def test_create_menu(client):
 
 
 def test_create_menu_item(client, sample_user):
-    # 首先创建测试菜单项
+    
     test_create_menu(client)
 
-    # 新的菜单项数据
+    
     item_data = {
         "user_id": sample_user.user_id,
         "name": "Flat White",
@@ -179,7 +179,7 @@ def test_create_menu_item(client, sample_user):
         "orderable": True
     }
     
-    # 创建新的菜单项
+    
     response = client.post("/api/v1/menu_items", json=item_data)
     assert response.status_code == 201
     assert response.json["name"] == item_data["name"]
@@ -187,7 +187,7 @@ def test_create_menu_item(client, sample_user):
     assert response.json["price"] == item_data["price"]
     assert response.json["orderable"] is item_data["orderable"]
 
-    # 验证新的菜单项是否确实被创建
+    
     response = client.get("/api/v1/menu_items")
     assert response.status_code == 200
     menu_items = response.json
@@ -205,15 +205,15 @@ def test_get_menu_items(client):
 
 
 def test_update_menu_item(client, sample_user):
-    # 首先创建测试菜单项
+    
     test_create_menu(client)
 
-    # 获取菜单项，以便获取要更新的项目ID
+   
     response = client.get("/api/v1/menu_items")
     assert response.status_code == 200
     menu_items = response.json
 
-    # 假设要更新 Espresso 项目
+    
     espresso_item = next(item for item in menu_items if item["name"] == "Espresso")
     update_data = {
         "user_id": sample_user.user_id,
@@ -223,7 +223,7 @@ def test_update_menu_item(client, sample_user):
         "orderable": True
     }
 
-    # 进行更新操作
+   
     response = client.put(f"/api/v1/menu_items/{espresso_item['item_id']}", json=update_data)
     assert response.status_code == 200
     assert response.json["name"] == "Updated Espresso"
@@ -231,7 +231,7 @@ def test_update_menu_item(client, sample_user):
     assert response.json["price"] == 3.0
     assert response.json["orderable"] is True
 
-    # 验证项目确实被更新
+    
     response = client.get(f"/api/v1/menu_items/{espresso_item['item_id']}")
     assert response.status_code == 200
     updated_item = response.json
diff --git a/k6_test/create_order.js b/k6_test/create_order.js
index e351f58..6b538c0 100644
--- a/k6_test/create_order.js
+++ b/k6_test/create_order.js
@@ -3,9 +3,9 @@ import { check, sleep } from 'k6';
 
 export const options = {
     stages: [
-        { duration: '2m', target: 1000 }, // Ramp-up to 20 users over 1 minute
-        { duration: '2m', target: 2500 }, // Stay at 20 users for 2 minutes
-        { duration: '2m', target: 0 },  // Ramp-down to 0 users over 1 minute
+        { duration: '2m', target: 1000 }, // Ramp-up to 2000 users over 1 minute
+        { duration: '2m', target: 2500 }, // Stay at 2500 users for 2 minutes
+        { duration: '2m', target: 0 },  // Ramp-down to 0 users over 2 minute
     ],
 };
 
diff --git a/k6_test/delete_test_menu_item.js b/k6_test/delete_test_menu_item.js
new file mode 100644
index 0000000..3228a6d
--- /dev/null
+++ b/k6_test/delete_test_menu_item.js
@@ -0,0 +1,50 @@
+import http from 'k6/http';
+import { check, sleep } from 'k6';
+
+export const options = {
+    vus: 1, 
+    duration: '120m', 
+};
+
+export default function () {
+    
+    const userId = 1;
+
+    
+    let getItemsRes = http.get('http://brewbucks-485861802.us-east-1.elb.amazonaws.com/api/v1/menu_items', {
+        headers: { 'Content-Type': 'application/json' },
+    });
+
+    check(getItemsRes, {
+        'items retrieval status is 200': (r) => r.status === 200,
+    });
+
+    let items = getItemsRes.json();
+    let itemsToDelete = items.slice(5); 
+
+    
+    itemsToDelete.forEach(item => {
+        let deleteData = JSON.stringify({
+            user_id: userId,
+            item_id: item.item_id,
+        });
+
+        
+        deleteItem(deleteData, item.name);
+    });
+}
+
+function deleteItem(deleteData, itemName) {
+    let deleteRes = http.del('http://brewbucks-485861802.us-east-1.elb.amazonaws.com/api/v1/menu_items', deleteData, {
+        headers: { 'Content-Type': 'application/json' },
+    });
+
+    
+    console.log(`Delete response for ${itemName}: ${deleteRes.status} ${deleteRes.body}`);
+
+    check(deleteRes, {
+        [`item deletion status for ${itemName} is 200`]: (r) => r.status === 200,
+    });
+
+   
+}
diff --git a/model/db_diagram.png b/model/db_diagram.png
index 4a77b2a..386e362 100644
Binary files a/model/db_diagram.png and b/model/db_diagram.png differ