如何使用express-session为普通用户和管理员用户创建两个不同的会话？

npm install express-session
const session = require('express-session');

const sessionStore = new session.MemoryStore();

app.use(session({
  secret: 'your-secret-key',
  resave: false,
  saveUninitialized: true,
  store: sessionStore
}));

app.post('/login', (req, res) => {
  // 登录验证逻辑
  if (user.isAdmin) {
    req.session.isAdmin = true;
  } else {
    req.session.isAdmin = false;
  }
  res.redirect('/dashboard');
});

const isAdmin = (req, res, next) => {
  if (req.session.isAdmin) {
    next();
  } else {
    res.status(403).send('Access denied');
  }
};

app.get('/admin/dashboard', isAdmin, (req, res) => {
  // 只有管理员用户可以访问该路由
  res.render('admin-dashboard');
});