MEAN堆栈上登录系统的架构？

I'm developing a web app on the MEAN stack (MongoDB, Express, AngularJS, and node.js). I'm developing a login system, and will also have some of the Angular routes protected so that only logged-in users can access them. I'm trying to think of the best way to approach the architecture of this.I'm developing a web app on the MEAN stack (Mon