Merge branch 'feature/qps' of git.yoho.cn:fe/yohobuy-node into feature/qps

@@ -42,6 +42,10 @@ function _cached(fn, ctx, ttl = HALF_MONTH) {
         const args = Array.prototype.slice.call(arguments);
         const key = pre + JSON.stringify(args || '[]');
 
+        if (!_.get(this.ctx.req.app.locals.pc, 'ci.tdk', false)) {
+            return Promise.resolve();
+        }
+
         return _cacheGet(key).catch(() => {
             return fn.apply(ctx, args).then(result => {
                 _cacheSave(key, result, ttl);