Why do some url paths end with `/`, while others don't?

  1. Why do some url paths end with / , while others don"t, such as the following:

    https://www.mi.com/mibookair-12/
    https://cn.vuejs.org/v2/guide/
    
    https://segmentfault.com/lives
    https://xueqiu.com/4074947120/113824660

    what"s the difference between the above two and the following two

  2. is like the path of https://xueqiu.com/4074947120/113824660. Why use id as the path name, and how does it correspond to the html template page?
Jun.23,2021

how to determine the route configured by the web server

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