Elixir & Phoenix

Write idiomatic Elixir with OTP patterns, supervision trees, and Phoenix LiveView. Builds fault-tolerant, highly concurrent backends and real-time features on the BEAM with GenServers and channels.

This skill helps you build resilient backends in Elixir and Phoenix. It structures OTP applications with supervision trees, models stateful processes as GenServers, builds real-time UIs with Phoenix LiveView and channels, designs Ecto schemas and changesets, and applies let-it-crash fault tolerance for systems that stay up under load.

When to use

Use when building Elixir/Phoenix applications, real-time features with LiveView or channels, or fault-tolerant concurrent systems with OTP supervision trees and GenServers.

Examples

LiveView feature

Real-time UI without custom JS

Build a Phoenix LiveView page showing a live-updating dashboard counter backed by PubSub broadcasts

Supervised GenServer

Fault-tolerant stateful process

Create a GenServer that caches API results, supervised in the application tree with a one-for-one restart strategy