recover memcached service

@@ -19,7 +19,7 @@ const cookieParser = require('cookie-parser');
 const favicon = require('serve-favicon');
 const session = require('express-session');
 
-// const memcached = require('connect-memcached');
+const memcached = require('connect-memcached');
 const hbs = require('express-handlebars');
 const pkg = require('./package.json');
 
@@ -27,7 +27,7 @@ const yohoLib = require('yoho-node-lib');
 
 const app = express();
 
-// const MemcachedStore = memcached(session);
+const MemcachedStore = memcached(session);
 
 // 全局注册library
 yohoLib.global(config);
@@ -65,12 +65,12 @@ app.use(session({
     cookie: {
         domain: 'yohobuy.com',
         httpOnly: false
-    }
+    },
 
-    // store: new MemcachedStore({
-    //     hosts: config.memcache.session,
-    //     prefix: 'yohobuy_session:'
-    // })
+    store: new MemcachedStore({
+        hosts: config.memcache.session,
+        prefix: 'yohobuy_session:'
+    })
 }));
 
 app.use((req, res, next) => {