I use authentication in the project following the example of metanit.com. How do I implement something like a license? For example, it is allowed to use online no more than 5 users and the 6th will not let it. I understand you need to dig in the direction of working with the sessions? Where can I read intelligibly on these issues?

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    I will disappoint you: alas, nowhere. There is no in-depth description in Russian (Habr, Metaint, Professor Web), nor in English: I read all the official articles at one time, they are all banal and introductory. (Each new author does not look at what others are writing and therefore each time he describes everything from scratch and stops when the material is typed on a page of text. Irritating.) Therefore, you can watch the identity sources, everything is banal - but you have to implement it yourself. - AK ♦
  • Yes, googled and in English. Did not find the info =) - Anton Evseev

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