Elixir runs millions of lightweight processes without threads or locks. This course covers pattern matching, OTP behaviors, the Phoenix framework, and the supervision trees that make Elixir systems self-healing.
This is a text-first course that links out to the best supporting material on the internet instead of trying to replace it. The goal is to make this the best course on elixir, otp, and concurrent systems you can find — even without producing a single minute of custom video.
This course is built by people who ship production elixir, systems for a living. It reflects how things actually work on real projects — not how the documentation describes them.
Every day has working code snippets you can paste into your editor and run right now. The emphasis is on understanding what each line does, not memorizing syntax.
Instead of shooting videos that go stale in six months, Precision AI Academy links to the definitive open-source implementations, official documentation, and the best conference talks on the topic.
Each day is designed to finish in about an hour of focused reading plus hands-on work. You can do the whole course over a week of lunch breaks. No calendar commitment, no live classes, no quizzes.
Each day stands alone. Read them in order for the full picture, or jump straight to the day that answers the question you have today.
The feature that makes Elixir code read like a spec. How matching works in function heads, case expressions, and with chains. Destructuring maps, lists, and tuples.
spawn, send, receive, and why Elixir processes are not OS threads. Process isolation, mailboxes, and the Actor model that makes Elixir systems fault-tolerant.
GenServer as the universal server abstraction. Supervisor trees that restart failed processes. The behaviors that ship in OTP and why you use them instead of raw processes.
Phoenix routes, controllers, LiveView for real-time UIs without JavaScript complexity, and Ecto for database access. The fastest web framework you can learn.
Releases with Mix, Fly.io deployment, secrets management, and the supervision tree configuration that keeps your app running through failures and deployments.
Instead of shooting our own videos, Precision AI Academy links to the best deep-dives already on YouTube. Watch them alongside the course. All external, all free, all from builders who ship this stuff.
Pattern matching, processes, GenServer, and supervision trees — the full OTP stack explained.
Building real-time web UIs in Phoenix LiveView without writing JavaScript.
Every form of pattern matching in Elixir with examples of how it simplifies code that would require if/else chains in other languages.
Mix releases, secrets, and deploying a Phoenix app to Fly.io with zero configuration.
The best way to understand any technology is to read the production-grade implementations that prove it works. These repositories implement patterns from every day of this course.
The language source. The OTP behaviors (GenServer, Supervisor, Registry) are in lib/elixir/lib/ — worth reading for Day 3.
The web framework for Day 4. LiveView is in lib/phoenix_live_view/ — the stateful process-per-socket architecture is a masterclass in OTP.
Elixir’s database library. The Changeset source explains how Elixir handles data validation without mutations.
Concurrent data processing pipelines built on GenStage. The best real-world example of OTP supervisors and back-pressure.
You write imperative code and want to understand what makes functional, concurrent languages feel different. Elixir is the most approachable entry point.
You need to handle thousands of simultaneous connections. Elixir’s process model does this without threads, locks, or async/await complexity.
Supervisor trees automatically restart failed processes. This course teaches the OTP patterns that make Elixir systems stay up.
The 2-day in-person Precision AI Academy bootcamp covers Elixir, OTP, and concurrent systems hands-on. 5 U.S. cities. $1,490. 40 seats max. June–October 2026 (Thu–Fri).
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