多个用户分配到同一会话ID（快速会话）？

Question

我正在使用express session和MongoStore来存储会话ID

这是我的app.js

var express = require('express');
var mongoose = require('mongoose');
var bodyParser = require('body-parser');
var cookieParser = require('cookie-parser');
var session = require('express-session');
var MongoStore = require('connect-mongo')(session);
var passport = require('passport');
var flash = require('connect-flash');
var path = require('path');
var app = express();

var user = require('./models/userModel');

//------Connect to database
var mongoose = require('mongoose');
mongoose.Promise = global.Promise;

mongoose.connect('mongodb://localhost:27017/porto', { useMongoClient: true });

//------Config Passport
require('./config/passport.js')(passport);

//------Adding middlewares
app.use(bodyParser.urlencoded({extended:true}));
app.use(cookieParser());
app.use(session({
  secret : 'secret',
  saveUninitialized : true,
  resave : true,
  store  : new MongoStore({mongooseConnection : mongoose.connection})
}));
app.use(passport.initialize());
app.use(passport.session());
app.use(flash());

我发布ToDo的路线处理程序

app.post('/addTodo',function(req,res){

  console.log(req.body);
  console.log(req.user._id);  // Here the user id is changed
  console.log(req.sessionID); // Here the sessionID never changed, but assigned to the newly logged in user

  var todo = req.body.todo;

  userModel.update(
    { _id: req.user._id },
    { $push: { todos: todo } },
    function(err,done){
      if (err)
      return err;
    return done;
    }
  );
  res.redirect('/profile');
});