Designing Elixir Systems With OTP

Touch Up the API Layer

We’ve built our boundary layer with an outer API. We know we’ll need to make a few changes, but not too many. Here’s the bill we have to pay for earlier changes:

• We no longer need to start our QuizManager, so we can remove that API.

• We refer to all QuizSession APIs by pid, and we’ll need to change those to use {quiz.title, email} tuples.

• The take_quiz function will shift to our new take_quiz API.

There’s not too much work to do. Let’s get to it.

The first order of business is to remove the start_quiz_manager API. We no longer need to do that work. Open up mastery.ex and remove the entire function start_quiz_manager. It won’t hurt anything, but we may as well be good citizens and keep down our future maintenance requirements. ...