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Mar 20, 2026
2 min read

Exit Polling

Real-time exit polling application.

I’ve always been fascinated by functional programming languages, and Elixir is one of the most popular ones out there, and I love it. The way I can just spawn processes without worrying about memory management or thread safety is amazing. The native pattern matching, pipes, guards and the powerful OTP framework make it a joy to work with.

So, I decided to build a real-time exit polling application using Elixir, Phoenix, and Inertia.js.

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The app is made up of 3 different mix projects:

  • poller: The OTP application that handles the business logic of the app, it uses GenServers to manage the state of the polls and the votes.
  • poller dal: A simple application that handles the database interactions using Ecto and Postgres.
  • poller phx: The Phoenix application that serves the frontend and handles the web requests, it uses Inertia.js to render the frontend using React.