如何在Node.js中创建有效的跟随者-跟随者机制

Question

I have a Node.js application, with a simple follow mechanism (which allows a user to get the latest articles for those he/she follows).

I implemented this, I creating an array called followers, containing the userIDs of all users following a particular user. To get the news feed, I simply forEach in every user's followers array, to find which of them contains logged in user's id. If it is found, all the posts of those users should be retrieved in JSON format. This works for now, but I believe as many more users sign up, fetching the feed will become a more cumbersome task, slowing down the feed page's loading.

What is the best way to correct this problem, and structure the following mechanism?

NB: My app uses Express, Mongoose and PUG for templating.

Answer 1

You need to create a user model. And if you are using mongodb, you need to use mongoose.Schema. First you have to npm install mongoose. And then you need to create your user object like this:

 const mongoose = require("mongoose"); var UserSchema = mongoose.Schema({ username:{ type: String, //unique: true, trim: true, minLength: 1, required: true }, name:{ type: String, // unique: true, trim: true, minLength: 1, required: true }, email:{ type: String, //unique: true, trim: true, minLength: 1, required: true, validate:{ validator: validator.isEmail, message: '{VALUE} is not a valid email' } }, password:{ type: String, required: true, minlength: 4 } }); 

I suggest you look for some MEAN app tutorials for further help.