Chapter 8. Multiuser Authentication the Microservice Way

Now that our Notes application can save its data in a database, we can think about the next phase of making this a real application, namely authenticating our users. In this chapter, we'll discuss the following three aspects of this phase:

  • Creating a microservice to store user profile/authentication data.
  • User authentication with a locally stored password.
  • Using OAuth2 to support authentication via third-party services. Specifically, we'll use Twitter as a third-party authentication service.


    It seems so natural to log in to a website to use its services. We do it every day, and we even trust banking and investment organizations to secure our financial information through login procedures ...

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