Chapter 4: Planning an Online Store Application

Questions:

1. How do you verify that a user has access to a function of a microservice?
2. What is a good lifespan for an access token?
3. Why is JSON a good choice for the inputs and outputs of microservices?

Answers:

1. A JSON Web Token (JWT) middleware (SimpleJWTMiddleware) verifies that only permitted users can access a function of a microservice.
2. This depends on the case. Some cases warrant 60 seconds, while others can have a lifespan of multiple hours or even days.
3. Because it is universally readable and lots of libraries support it well in many programming languages and environments.