Building a transactional pipeline with TDD and Elixir

We are used to work with database level transactions. But, what happens when the transactional limits go beyond the database? How do we handle a complex transaction that affects different systems? How would you solve this problem using a functional language?

In this talk we will describe a real problem that we faced at DNSimple. We will discuss the challenges that we faced and how we used TDD and Elixir to solve it.