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diff --git a/app/__pycache__/main.cpython-312.pyc b/app/__pycache__/main.cpython-312.pyc
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diff --git a/app/database.py b/app/database.py
index d1e57d5..52648f5 100644
--- a/app/database.py
+++ b/app/database.py
@@ -1,18 +1,19 @@
-from neo4j import GraphDatabase
+from neo4j import GraphDatabase, AsyncGraphDatabase
+
 from app.config import settings
 
 class Neo4jConnection:
     def __init__(self, uri, user, password):
         # 初始化连接，只负责连接
-        self.driver = GraphDatabase.driver(uri, auth=(user, password))
+        self.driver = AsyncGraphDatabase.driver(uri, auth=(user, password), max_connection_pool_size=100)
 
-    def close(self):
+    async def close(self):
         # 关闭连接
-        self.driver.close()
+        await self.driver.close()
 
     def get_session(self):
         # 提供 session 对象，供外部查询使用
-        return self.driver.session()
+        return  self.driver.session()
 
 # 初始化全局 Neo4j 连接
 neo4j_conn = Neo4jConnection(
diff --git a/app/locustfile.py b/app/locustfile.py
new file mode 100644
index 0000000..79c4173
--- /dev/null
+++ b/app/locustfile.py
@@ -0,0 +1,24 @@
+import random
+from locust import HttpUser, task, between
+
+class APIUser(HttpUser):
+    # 设置模拟用户之间的等待时间（例如：每个用户之间随机等待 1-3 秒）
+    wait_time = between(1, 3)
+
+    # 定义一个包含多个章节 ID 的列表
+    chapter_ids = ["1", "3", "6", "8", "15"]
+
+    @task
+    def get_chapter_relations(self):
+        # 从章节 ID 列表中随机选择一个章节 ID
+        chapter_id = random.choice(self.chapter_ids)
+        self.client.get(f"/chapters/{chapter_id}/relations")
+
+    @task
+    def get_all_relations(self):
+        self.client.get("/chapters/relations/")
+
+    @task
+    def get_relations_by_level(self):
+        level = random.randint(1, 5)  # 随机选择一个层级，范围为 1 到 5
+        self.client.get(f"/chapters/relations/level/{level}")
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diff --git a/app/routers/user.py b/app/routers/user.py
index c228a13..3780e77 100644
--- a/app/routers/user.py
+++ b/app/routers/user.py
@@ -1,8 +1,10 @@
 from fastapi import APIRouter
 from typing import List
 from fastapi import APIRouter, HTTPException
+
+# from app.routers import get_cached_data
 from app.schemas.user import ChapterRelationCreate, ChapterRelationResponse
-from app.services.user_service import create_chapter_relation, get_graph_relations, search_chapters, \
+from app.services.user_service import  get_graph_relations, search_chapters, \
     get_relations_to_level_simple, get_chapter_relations
 
 router = APIRouter(
@@ -10,46 +12,55 @@ router = APIRouter(
     tags=["Chapters"],
 )
 
-@router.post("/relation/", response_model=ChapterRelationResponse)
-def add_chapter_relation(relation: ChapterRelationCreate):
-    """
-    创建章节之间的关系
-    """
-    return create_chapter_relation(relation)
 
 @router.get("/relations/", response_model=List[ChapterRelationResponse])
-def list_chapter_relations():
+async def list_chapter_relations():
+    # cache_key = "all_chapter_relations"
+    # cached_data = get_cached_data(cache_key)  # 从缓存获取
+    # if cached_data:
+    #     return [ChapterRelationResponse(**data) for data in cached_data]  # 缓存命中，返回数据
     """
     查询所有章节关系
     """
-    return get_graph_relations()
+    return await get_graph_relations()
 
 
 @router.get("/search_chapters", response_model=List[ChapterRelationResponse])
-def search_chapters_endpoint(q: str):
+async def search_chapters_endpoint(q: str):
     """
     API 端点：根据搜索关键字模糊查询章节及其相关章节
     :param q: 搜索关键字
     :return: 匹配的章节关系列表
     """
+    # cache_key = f"search_chapters:{q}"
+    # # 尝试从缓存中获取数据
+    # cached_data = get_cached_data(cache_key)
+    # if cached_data:
+    #     # 如果缓存命中，直接返回缓存中的数据
+    #     return [ChapterRelationResponse(**data) for data in cached_data]
     if not q:
         raise HTTPException(status_code=400, detail="搜索关键字不能为空")
-    results = search_chapters(q)
+    results = await search_chapters(q)
     if not results:
         raise HTTPException(status_code=404, detail="未找到匹配的章节关系")
     return results
 @router.get("/relations/level/{level}", response_model=List[ChapterRelationResponse])
-def get_relations_by_level_simple(level: int):
+async def get_relations_by_level_simple(level: int):
     """
     简化版：根据目标层级查询从 Root 到目标层级的所有节点和关系
     :param level: 目标层级（1 -> Root & Subject, 2 -> Root, Subject, Topic, ..., 5 -> Problem）
     :return: 对应层级的节点和关系
     """
+    # cache_key = f"level_{level}_relations"
+    # cached_data = get_cached_data(cache_key)  # 从缓存获取
+    # if cached_data:
+    #     return [ChapterRelationResponse(**data) for data in cached_data]  # 缓存命中，返回数据
+
     if level < 0 or level > 5:
         raise HTTPException(status_code=400, detail="层级参数必须在 0 到 5 之间")
 
     try:
-        relations = get_relations_to_level_simple(level)
+        relations =  await get_relations_to_level_simple(level)
         if not relations:
             raise HTTPException(status_code=404, detail="未找到相关节点关系")
         return relations
@@ -62,10 +73,11 @@ async def get_relations_by_chapter(chapter: str):
     :param chapter_name: 章节名称
     :return: 章节关系列表
     """
-    try:
-        relations = get_chapter_relations(chapter)
-        if not relations:
-            raise HTTPException(status_code=404, detail=f"No relations found for chapter {chapter}")
-        return relations
-    except Exception as e:
-        raise HTTPException(status_code=500, detail=f"Error fetching relations: {str(e)}")
\ No newline at end of file
+    # cache_key = f"chapter_relations:{chapter}"  # 不使用分页，直接根据章节名称生成缓存键
+    # cached_data = get_cached_data(cache_key)  # 从缓存中获取数据
+    # if cached_data:
+    #     return [ChapterRelationResponse(**data) for data in cached_data]  # 如果缓存命中，直接返回缓存数据
+    relations = await get_chapter_relations(chapter)
+    if not relations:
+        raise HTTPException(status_code=404, detail=f"No relations found for chapter {chapter}")
+    return relations
\ No newline at end of file
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diff --git a/app/services/user_service.py b/app/services/user_service.py
index 982897b..932d71d 100644
--- a/app/services/user_service.py
+++ b/app/services/user_service.py
@@ -1,39 +1,15 @@
 import logging
 from typing import List
 
+from fastapi import HTTPException
+
 from app.database import neo4j_conn
 from app.schemas.user import ChapterRelationCreate, ChapterRelationResponse
 
 
-def create_chapter_relation(relation_data: ChapterRelationCreate):
-    """
-    创建章节关系
-    :param relation_data: 包含起始章节、结束章节和关系类型
-    :return: 创建的关系数据
-    """
-    query = """
-    MERGE (start:Chapter {name: $start_chapter})
-    MERGE (end:Chapter {name: $end_chapter})
-    CREATE (start)-[r:%s]->(end)
-    RETURN start.name AS start_chapter, TYPE(r) AS relation, end.name AS end_chapter
-    """ % relation_data.relation.upper()  # 使用动态关系类型
-
-    # 获取 session 进行查询
-    with neo4j_conn.get_session() as session:
-        result = session.run(query, parameters={
-            "start_chapter": relation_data.start_chapter,
-            "end_chapter": relation_data.end_chapter,
-        })
-        record = result.single()
-        return {
-            "start_chapter": record["start_chapter"],
-            "relation": record["relation"],
-            "end_chapter": record["end_chapter"],
-        }
-
-
-
-def get_graph_relations():
+
+
+async def get_graph_relations():
     """
     查询知识图谱中的所有节点及关系的详细信息
     :return: 列表，每一项为 ChapterRelationResponse 对象
@@ -47,9 +23,9 @@ def get_graph_relations():
         properties(end) AS end_properties,
         labels(end) AS end_labels
     """
-    with neo4j_conn.get_session() as session:
-        result = session.run(query)
-        records = result.data()
+    async with neo4j_conn.get_session() as session:
+        result = await session.run(query)
+        records = await result.data()
 
         responses = []
         for record in records:
@@ -69,7 +45,7 @@ def get_graph_relations():
         return responses
 
 
-def search_chapters(search_term: str) -> List[ChapterRelationResponse]:
+async def search_chapters(search_term: str) -> List[ChapterRelationResponse]:
     """
     根据搜索关键字模糊查询章节及其相关章节
     :param search_term: 搜索关键字
@@ -88,9 +64,9 @@ def search_chapters(search_term: str) -> List[ChapterRelationResponse]:
         labels(end) AS end_labels
     """
     try:
-        with neo4j_conn.get_session() as session:
-            result = session.run(query, parameters={"search_term": search_term})
-            records = result.data()
+        async with neo4j_conn.get_session() as session:
+            result = await session.run(query, parameters={"search_term": search_term})
+            records = await result.data()
 
             responses = [
                 ChapterRelationResponse(
@@ -109,7 +85,7 @@ def search_chapters(search_term: str) -> List[ChapterRelationResponse]:
         return []
 
 
-def get_relations_to_level_simple(level: int) -> List[ChapterRelationResponse]:
+async def get_relations_to_level_simple(level: int) -> List[ChapterRelationResponse]:
     """
     简化版：根据目标层级查询从 Root 到目标层级的所有节点和关系
     :param level: 目标层级（1 -> Root & Subject, 2 -> Root, Subject, Topic, ..., 5 -> Problem）
@@ -130,9 +106,9 @@ def get_relations_to_level_simple(level: int) -> List[ChapterRelationResponse]:
            """
 
         try:
-            with neo4j_conn.get_session() as session:
-                result = session.run(query)
-                records = result.data()
+            async with neo4j_conn.get_session() as session:
+                result = await session.run(query)
+                records = await result.data()
 
                 return [
                     ChapterRelationResponse(
@@ -163,9 +139,9 @@ def get_relations_to_level_simple(level: int) -> List[ChapterRelationResponse]:
     """
 
     try:
-        with neo4j_conn.get_session() as session:
-            result = session.run(query, parameters={"target_labels": target_labels})
-            records = result.data()
+        async with neo4j_conn.get_session() as session:
+            result = await session.run(query, parameters={"target_labels": target_labels})
+            records = await result.data()
 
             return [
                 ChapterRelationResponse(
@@ -180,7 +156,7 @@ def get_relations_to_level_simple(level: int) -> List[ChapterRelationResponse]:
     except Exception as e:
         logging.error(f"Error during get_relations_to_level_simple: {e}")
         return []
-def get_chapter_relations(chapter: str) -> List[ChapterRelationResponse]:
+async def get_chapter_relations(chapter: str) -> List[ChapterRelationResponse]:
     """
     根据章节名称查找该章节及其相关节点和关系
     :param chapter_name: 章节名称
@@ -197,10 +173,9 @@ def get_chapter_relations(chapter: str) -> List[ChapterRelationResponse]:
         labels(end) AS end_labels
     """
     try:
-        with neo4j_conn.get_session() as session:
-            result = session.run(query, parameters={"chapter": chapter})
-            records = result.data()
-
+        async with neo4j_conn.get_session() as session:
+            result = await session.run(query, parameters={"chapter": chapter})
+            records = await result.data()
             return [
                 ChapterRelationResponse(
                     start_labels=record.get("start_labels", []),
diff --git a/app/test/__init__.py b/app/test/__init__.py
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index 0000000..e69de29
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diff --git a/app/test/test.py b/app/test/test.py
new file mode 100644
index 0000000..5ce98a1
--- /dev/null
+++ b/app/test/test.py
@@ -0,0 +1,61 @@
+import logging
+import random
+import httpx
+import pytest  # 使用 pytest 来运行异步测试
+
+from app.main import app  # 替换为你的 FastAPI 应用实例
+
+@pytest.mark.asyncio  # 指定测试是异步的
+async def test_list_chapter_relations():
+    async with httpx.AsyncClient(app=app, base_url="http://test") as client:
+        response = await client.get("/chapters/relations/")
+        assert response.status_code == 200
+        assert isinstance(response.json(), list)  # 检查返回的数据类型
+
+@pytest.mark.asyncio
+async def test_search_chapters_valid():
+    async with httpx.AsyncClient(app=app, base_url="http://test") as client:
+        response = await client.get("/chapters/search_chapters?q=1")
+        assert response.status_code == 200
+        assert isinstance(response.json(), list)
+        assert len(response.json()) > 0  # 假设数据库中有相关数据
+
+@pytest.mark.asyncio
+async def test_search_chapters_invalid():
+    async with httpx.AsyncClient(app=app, base_url="http://test") as client:
+        response = await client.get("/chapters/search_chapters?q=")  # 空查询
+        assert response.status_code == 400
+        assert response.json() == {"detail": "搜索关键字不能为空"}
+
+@pytest.mark.asyncio
+async def test_get_relations_by_level_valid():
+    async with httpx.AsyncClient(app=app, base_url="http://test") as client:
+        response = await client.get("/chapters/relations/level/3")
+        print(response.json())
+        assert response.status_code == 200
+        assert isinstance(response.json(), list)
+        assert len(response.json()) > 0
+
+@pytest.mark.asyncio
+async def test_get_relations_by_level_invalid():
+    async with httpx.AsyncClient(app=app, base_url="http://test") as client:
+        response = await client.get("/chapters/relations/level/6")
+        assert response.status_code == 400
+        assert response.json() == {"detail": "层级参数必须在 0 到 5 之间"}
+
+@pytest.mark.asyncio
+async def test_get_relations_by_chapter_valid():
+    chapter_id = random.choice(["1", "3", "6", "8", "15"])
+    async with httpx.AsyncClient(app=app, base_url="http://test") as client:
+        response = await client.get(f"/chapters/{chapter_id}/relations")
+        print(response.json())
+        assert response.status_code == 200
+        assert isinstance(response.json(), list)
+
+@pytest.mark.asyncio
+async def test_get_relations_by_chapter_not_found():
+    async with httpx.AsyncClient(app=app, base_url="http://test") as client:
+        response = await client.get("/chapters/10/relations")
+        print(response.json())
+        assert response.status_code == 404
+        assert response.json() == {"detail": "No relations found for chapter 10"}