開發用於通知的數據庫模式，如facebook

Question

我想創建一個簡單的社交應用程序來測試mongoDB的性能 例如，我發佈狀態「Hello every body，have a good day」 我的社交發送通知時，其他用戶「喜歡」，‘評論’，‘共享’

"A like your post" -> create a new notify 
"B like your post" -> create a new notify 
"C comment in your post" -> new no 
"D comment in your post" -> new no 

第一次，我嘗試設計像這樣

notify_post 
{ 
    "post_id":"", 
    "link" : "",//link to post 
    "type": ""//like comment or share 
    "u_id": // the Id of user that like, comment,...etc 

} 

喔，有一千通知，甚至暢想通知每天都 創建對於考試A，B，C也喜歡你的評論，C，D，E也在你的文章發表評論，我不認爲每個通知都像我們創建一個新的項目。 後來我有一個想法

我加3場進行後的文檔一樣，

post 
{ 
     "title":"" 
     "content" :"" 
     "like":[]// 
     "like_notify" : //0 or 1 
     "comment" [uid,uid] 
     "comment_notify" : //0 or 1 
     "share": [uid,uid] 
     "share_notify" //0 or 1 

     comment //rest... 
} 

每當我的帖子的標誌「comment_notify」用戶註釋轉向1告訴我，我的帖子有新評論

like "A comment in your post", 
then C,D,E also comment in my post ,notify will be like that 
"E,D and 2 others user also comment in your post" 
"like" and "share" is so on 

但是文件的大小限制是16MB，那是個好主意嗎？

你有任何的想法！感謝這麼多

Answer 1

router.post('/index/likestatus', function(req, res, next) { 
    // Get form values 
    var username = req.user.username; //get the username from the sessions get current username who is login 
    var name = req.user.name; //same as above line this time get name of user 
    var like = { 
      "name" : name, 
      "username": username 
      };// my like is embedded to every status or post store who like this status 

     Status.update({ 
       "_id": req.body.iid //this is status id or post id ...replace status with post in yours case 
      }, 
      { 
       $push:{ 
        "likes": like 
       }//this $push save the newlike in collection 
      }, 
      function(err, doc) { 
       if(err) { 
        throw err 
       } else { 
var newnotification = new notification 
({postid:req.body.iid,,type:'like',uid:req.user.username,link:'yourlocalhost/'+post_id}).save(function (err) { 
       console.log(username+' has posted a new status'); 
        res.send({status:'success'}); 
       } 
      } 
     );//this save function save new notifications for a user the collection is similar to your req.body.iid is get from form u submit and its status id ,uid:req.user.username you store username in uid as i say username is _id or primary key 
    });