add cached

@@ -26,15 +26,16 @@ function _cacheGet(key) {
     });
 }
 
-// 半个月
-const HALF_MONTH = 60 * 60 * 24 * 15;
+const ONE_HOUR = 60 * 60;  // 一小时
+const ONE_DAY = ONE_HOUR * 24; // 一天
+const HALF_MONTH = ONE_DAY * 15; // 半个月
 
-function _cacheSave(key, value) {
-    return cache.set(key, value, HALF_MONTH)
+function _cacheSave(key, value, ttl) {
+    return cache.set(key, value, ttl)
         .catch(err => logger.error(`save cache data fail:${err.toString()}`));
 }
 
-function _cached(fn, ctx) {
+function _cached(fn, ctx, ttl = HALF_MONTH) {
     const pre = 'recommend-cache:' + (fn.name || 'random:' + uuid.v4()) + ':';
 
     return function() {
@@ -43,7 +44,7 @@ function _cached(fn, ctx) {
 
         return _cacheGet(key).catch(() => {
             return fn.apply(ctx, args).then(result => {
-                _cacheSave(key, result);
+                _cacheSave(key, result, ttl);
                 return result;
             });
         });
@@ -61,6 +62,7 @@ module.exports = class extends global.yoho.BaseModel {
         this.getNewProduct = _cached(this._getNewProduct, this);
         this.getGuangArticles = _cached(this._getGuangArticles, this);
         this.getRecommendKeywords = _cached(this._getRecommendKeywords, this);
+        this.getShopRecommendAsync = _cached(this._getShopRecommendAsync, this, ONE_DAY);
     }
 
     /**
@@ -212,13 +214,13 @@ module.exports = class extends global.yoho.BaseModel {
     /**
      * 店铺推荐
      */
-    getShopRecommendAsync(skn, page, limit) {
+    _getShopRecommendAsync(skn) {
         return this.get({
             data: {
                 method: 'web.product.shopRecommend',
                 product_skn: skn,
-                page: page || 1,
-                limit: limit || 20
+                page: 1,
+                limit: 20
             }
         });
     }