fix reg match bug

@@ -14,7 +14,7 @@ const cachePage = {
     '/lifestyle': 30 * SECOND,
 
     // 商品详情页
-    '/product/\/pro_([\d]+)_([\d]+)\/(.*)/': 30 * MINUTE,
+    '/product/\\/pro_([\\d]+)_([\\d]+)\\/(.*)/': 30 * MINUTE,
 
     // 逛
     '/guang': 1 * MINUTE,

@@ -2,7 +2,9 @@
 'use strict';
 
 const path = require('path');
+const _ = require('lodash');
 const cachePage = require('../../config/cache');
+const md5 = require('md5');
 
 module.exports = () => {
     return (req, res, next) => {