Learn PHOENIX with Real Code Examples

Lightweight processes handle millions of concurrent connections

Use PubSub for scalable messaging

Optimize Ecto queries with indexes

Leverage caching via ETS or external caches

Hot code reload increases developer productivity

Use `Plug.CSRFProtection` for forms

Sanitize user inputs in controllers and templates

Use HTTPS and secure cookies

Apply authentication and authorization

Keep Phoenix and Elixir dependencies updated

Application logs via Logger

Telemetry for metrics

Integration with Prometheus/Grafana

Error tracking via Sentry

LiveView performance monitoring

Follow Elixir coding conventions

Use ExUnit for tests

Organize contexts for domain separation

Document controllers, schemas, and Channels

Use pipelines and functional transformations