jquery - 使用 jQuery 的实时通知

Question

我有这个代码：

    $(window).load(function(){
setInterval(function(){
var username=_userdata['username'];
var username=_userdata['username'];
$.get('/notification.forum',function(data){
     var b= data.unread;
    if(b >= 1){
      var c = data.store;
      for(var keys in c){
        var d = c[keys];
       if(d.read === 0){
        var e= d.text.type;
        var from= d.text.from.name;
        var topic = e===7 ? "in the topic "+d.text.post.topic_name.replace(/-/g,' ') : "";
        var type= Notify(e);
          createNotifcation('http://i.imgur.com/LPVUvcf.png',username + ' you have a new notification!',type + " from "+from+"  "+topic);
       }
      }
     }
   });
},5000);
   });

但我想实时制作。它每 5 秒检查一次，但这会使我的论坛出现错误，例如超出请求限制.. 好吧，这很烦人。我的论坛：www.daily-support.org