diff --git a/common/at.js b/common/at.js
index 71638a7..17dd5f4 100644
--- a/common/at.js
+++ b/common/at.js
@@ -21,7 +21,7 @@ var _ = require('lodash');
  */
 var fetchUsers = function (text) {
   var ignore_regexs = [
-    /```.+?```/, // 去除单行的 ```
+    /```.+?```/g, // 去除单行的 ```
     /^```[\s\S]+?^```/gm, // ``` 里面的是 pre 标签内容
     /`[\s\S]+?`/g, // 同一行中，`some code` 中内容也不该被解析
     /^    .*/gm, // 4个空格也是 pre 标签，在这里 . 不会匹配换行
@@ -33,6 +33,7 @@ var fetchUsers = function (text) {
     text = text.replace(ignore_regex, '');
   });
 
+
   var results = text.match(/@[a-z0-9\-_]+\b/igm);
   var names = [];
   if (results) {
diff --git a/controllers/site.js b/controllers/site.js
index fa7b4ef..78be1a1 100644
--- a/controllers/site.js
+++ b/controllers/site.js
@@ -19,6 +19,9 @@ var renderHelper = require('../common/render_helper');
 
 // 主页的缓存工作。主页是需要主动缓存的
 function indexCache() {
+  if (config.debug) {
+    return;
+  }
   var limit = config.list_topic_count;
   // 为所有版块（tab）做缓存
   [['', '全部']].concat(config.tabs).forEach(function (pair) {
diff --git a/test/common/at.test.js b/test/common/at.test.js
index c9a5ae6..256a440 100644
--- a/test/common/at.test.js
+++ b/test/common/at.test.js
@@ -44,6 +44,10 @@ describe('test/common/at.test.js', function () {
     @alsotang3
     ```
 
+    ```js
+       @flow
+    ```
+
     ```@alsotang4```
 
     @
@@ -87,6 +91,10 @@ jysperm@gmail.com [@alsotang](/user/alsotang)
 @alsotang3
 ```
 
+```js
+   @flow
+```
+
 ```@alsotang4```
 
 @