Evolution of an Elixir Backend for Hotel Reservations

The talk covers the development journey of an Elixir backend application designed for hotel online reservations, starting from a minimum viable product (MVP) with a synchronous booking flow. As the application and the product expanded, various challenges surfaced. To enhance the booking flow, incremental improvements were made, beginning with a simple asynchronous approach using Elixir's built-in capabilities. Eventually, the application evolved to an event-driven architecture enabling distributed processing of different booking flow stages. This evolution resulted in a more reliable booking process, enhanced performance, and an improved customer experience.