So the core is written in Java. The core is a http microservice that contains the main auth logic + interacts with the database. The backend API queries the co

So the core is written in Java. The core is a http microservice that contains the main auth logic + interacts with the database. The backend API queries the core for sign in / sign up / sessions etc... This can be in any framework, and we decided to choose NodeJS first. Here, the user does not have to interact with Java at all.. just simply use our NodeJS SDK that internally calls the core's APIs