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Generally speaking, the larger the application, the more internal and external services it has to talk to. External services usually have their own way of authenticating and authorizing third party API calls. With internal systems however, organisations prefer to use JWT tokens because of their inherent flexibility and versatility. A sample JWT based handshake between 2 rails applications using ruby-jwt would look like this -
JWT is one of the most popular authentication & authorization techniques employed in modern applications. There are several articles and guides available on how to get started with JWT in any application or framework. In this post however, we will talk about some lesser talked about tricks of JWT, specifically in the context of large applications.