Nodejs Write a Single Sign-On System

  node.js, question

If you don’t cross domains, is it that ticket is stored in cookie, where is my personal information in session? authentication system or subsystem? I have not been very clear about the process in cross domains. do you have any better demo explanations or tutorials for me? it is better for nodejs to write single point system with node. is there any useful module

Landlord, please pay attention to typesetting and punctuation.
You can put the session in a place that can be stored permanently, such as a database or redis.
It is also possible to POST other sites when logging in to one, but if there are too many, it will be in trouble.