feat:Redis缓存升级

app/db.py

@@ -3,6 +3,8 @@ from sqlalchemy.pool import QueuePool
 from sqlalchemy import text
 from app.models import UserRole, OrderStatus
 import time
+import redis
+from redis import RedisError
 
 def wait_for_db(max_retries=5, delay=5):
     """等待数据库连接可用"""
@@ -27,8 +29,35 @@ def wait_for_db(max_retries=5, delay=5):
             time.sleep(delay)
     return None
 
+def init_redis(max_retries=3, delay=1):
+    """初始化Redis连接池"""
+    redis_pool = redis.ConnectionPool(
+        host='localhost',
+        port=6379,
+        db=0,
+        max_connections=10,
+        decode_responses=True
+    )
+    
+    for i in range(max_retries):
+        try:
+            r = redis.Redis(connection_pool=redis_pool)
+            if r.ping():
+                print(f"Redis连接成功 (尝试 {i+1}/{max_retries})")
+                return redis_pool
+        except RedisError as e:
+            if i == max_retries - 1:
+                raise
+            time.sleep(delay)
+    return None
+
 # 使用连接池的数据库引擎
 engine = wait_for_db()
+redis_pool = init_redis()
+
+def get_redis():
+    """获取Redis连接"""
+    return redis.Redis(connection_pool=redis_pool)
 
 # 创建数据库表
 def init_db():

app/routes.py

@@ -3,7 +3,7 @@ from sqlmodel import Session, select
 from sqlalchemy import text
 from .models import User, Order
 from .schemas import UserLogin, OrderCreate, OrderUpdate, UserUpdate
-from .utils import hash_password, verify_password, create_jwt_token, decode_jwt_token, admin_required
+from .utils import hash_password, verify_password, create_jwt_token, decode_jwt_token, admin_required, cache_response
 from .db import engine
 from .schemas import OrderStatus
 
@@ -47,6 +47,7 @@ def login_page():
 # 订单管理接口
 @order_bp.route('/', methods=['GET'])
 @jwt_required
+@cache_response(ttl=30, key_prefix="orders")
 def list_orders():
     with Session(engine) as session:
         orders = session.exec(select(Order)).all()
@@ -62,6 +63,8 @@ def create_order():
         session.add(order)
         session.commit()
         session.refresh(order)
+        from app.utils import invalidate_cache
+        invalidate_cache("orders")
         return jsonify(order.dict()), 201
 
 @order_bp.route('/<int:order_id>', methods=['PUT'])
@@ -80,6 +83,10 @@ def update_order(order_id):
                 setattr(order, field, value)
         session.add(order)
         session.commit()
+        from app.utils import invalidate_cache
+        invalidate_cache("orders")
+        invalidate_cache("summary")
+        invalidate_cache("rating")
         return jsonify(order.dict())
 
 @order_bp.route('/<int:order_id>', methods=['DELETE'])
@@ -91,6 +98,10 @@ def delete_order(order_id):
             return jsonify({'msg': 'Order not found'}), 404
         session.delete(order)
         session.commit()
+        from app.utils import invalidate_cache
+        invalidate_cache("orders")
+        invalidate_cache("summary")
+        invalidate_cache("rating")
         return jsonify({'msg': 'Deleted'})
 
 @auth_bp.route('/users/<int:user_id>', methods=['PUT'])
@@ -114,6 +125,7 @@ def order_panel():
 
 @order_bp.route('/summary')
 @jwt_required
+@cache_response(ttl=60, key_prefix="summary")
 def get_order_summary():
     with Session(engine) as session:
         # 查询all_orders_summary表，按status分组统计count总和
@@ -134,6 +146,7 @@ def get_order_summary():
 
 @order_bp.route('/rating_summary')
 @jwt_required
+@cache_response(ttl=60, key_prefix="rating")
 def get_rating_summary():
     with Session(engine) as session:
         # 查询each_order_summary表，按order_id和status分组统计
@@ -175,6 +188,7 @@ def get_rating_summary():
         })
 @order_bp.route('/type_summary')
 @jwt_required
+@cache_response(ttl=60, key_prefix="type")
 def get_type_summary():
     with Session(engine) as session:
         # 查询order_type_summary表，按order_type分组统计count总和
@@ -190,6 +204,7 @@ def get_type_summary():
 
 @order_bp.route('/top_products')
 @jwt_required
+@cache_response(ttl=60, key_prefix="top")
 def get_top_products():
     with Session(engine) as session:
         # 查询top_products_summary表，按sales_count降序获取前5条记录

app/utils.py

@@ -2,6 +2,9 @@ import jwt
 from werkzeug.security import generate_password_hash, check_password_hash
 from datetime import datetime, timedelta
 from flask import current_app, request, jsonify
+from functools import wraps
+from app.db import get_redis
+import json
 
 def hash_password(password):
     return generate_password_hash(password)
@@ -13,13 +16,21 @@ def create_jwt_token(user):
     payload = {
         'user_id': user.id,
         'role': user.role,
-        'exp': datetime.utcnow() + timedelta(days=1)
+        'exp': datetime.utcnow() + timedelta(days=7)
     }
     token = jwt.encode(payload, current_app.config['SECRET_KEY'], algorithm='HS256')
+    # 缓存token
+    r = get_redis()
+    r.setex(f"token:{token}", int(timedelta(days=1).total_seconds()), "1")
     return token
 
 def decode_jwt_token(token):
     try:
+        # 先检查Redis缓存
+        r = get_redis()
+        if not r.exists(f"token:{token}"):
+            return None
+            
         payload = jwt.decode(token, current_app.config['SECRET_KEY'], algorithms=['HS256'])
         return {'user_id': payload['user_id'], 'role': payload['role']}
     except jwt.ExpiredSignatureError:
@@ -28,6 +39,7 @@ def decode_jwt_token(token):
         return None
 
 def admin_required(f):
+    @wraps(f)
     def wrapper(*args, **kwargs):
         auth = request.headers.get('Authorization', None)
         if not auth or not auth.startswith('Bearer '):
@@ -37,5 +49,32 @@ def admin_required(f):
         if not user_data or user_data.get('role') != 'admin':
             return jsonify({'msg': 'Admin access required'}), 403
         return f(*args, **kwargs)
-    wrapper.__name__ = f.__name__
     return wrapper
+
+def cache_response(ttl=30, key_prefix="cache"):
+    """缓存响应装饰器"""
+    def decorator(f):
+        @wraps(f)
+        def wrapper(*args, **kwargs):
+            r = get_redis()
+            cache_key = f"{key_prefix}:{request.path}"
+            
+            # 尝试从缓存获取
+            cached_data = r.get(cache_key)
+            if cached_data:
+                return jsonify(json.loads(cached_data))
+                
+            # 执行函数并缓存结果
+            response = f(*args, **kwargs)
+            if response.status_code == 200:
+                r.setex(cache_key, ttl, json.dumps(response.json))
+            return response
+        return wrapper
+    return decorator
+
+def invalidate_cache(key_prefix):
+    """使缓存失效"""
+    r = get_redis()
+    keys = r.keys(f"{key_prefix}:*")
+    if keys:
+        r.delete(*keys)

requirements.txt

@@ -6,3 +6,4 @@ werkzeug
 flask-cors
 pymysql
 pyecharts
+redis