refactor

@@ -10,12 +10,12 @@ const helpers = global.yoho.helpers;
 let ONE_DAY = 60 * 60 * 24;
 const MAX_QPS = config.maxQps;
 
-let pages = {
+const PAGES = {
     '/product/\\/pro_([\\d]+)_([\\d]+)\\/(.*)/': 5,
     '/product/list/index': 5
 };
 
-let ip_white_list= [
+const IP_WHITE_LIST = [
     '106.38.38.146',
     '218.94.75.58'
 ];
@@ -39,7 +39,10 @@ module.exports = (req, res, next) => {
         remoteIp = arr[0];
     }
 
-    if (remoteIp && !_.get(req.app.locals, 'pc.sys.noLimiter') && _.indexOf(ip_white_list, remoteIp) < 0) {   // 判断获取remoteIp成功，并且开关未关闭
+    if (remoteIp &&
+        !_.get(req.app.locals, 'pc.sys.noLimiter') &&
+        _.includes(IP_WHITE_LIST, remoteIp)) {   // 判断获取remoteIp成功，并且开关未关闭
+
         let key = `pc:limiter:${remoteIp}`;
 
         res.on('render', function() {
@@ -51,7 +54,7 @@ module.exports = (req, res, next) => {
             }
 
             let pageKey = urlJoin(appPath, route.toString()); // route may be a regexp
-            let pageIncr = pages[pageKey] || 0;
+            let pageIncr = PAGES[pageKey] || 0;
 
             if (pageIncr > 0) {
                 cache.incrAsync(key, pageIncr);
@@ -79,7 +82,7 @@ module.exports = (req, res, next) => {
 
         cache.getAsync(key).then((result) => {
             if (result && _.isNumber(result)) {
-                if (result > MAX_QPS) {          // 判断 qps
+                if (result > MAX_QPS) {       // 判断 qps
                     cache.touch(key, ONE_DAY);
                     logger.info('req limit', key);
                     return limiterPage();