phoenix-api-channels

Build real-time chat and notifications in Phoenix Channels by establishing WebSocket connections, defining topic subscriptions, and broadcasting events through PubSub to connected clients. This Skill provides the framework to implement live features like chat rooms and collaborative editing on the Elixir BEAM.

Phoenix Presence tracks connected users and devices in real-time by broadcasting join and leave events via PubSub. It maintains a synchronized state of active participants, allowing applications to monitor who is online and handle connection drops across the BEAM.

Add authentication to a Phoenix JSON API by creating custom plugs that verify user credentials and assign the current user to the connection. This Skill outlines using plugs within controllers to secure API endpoints and manage data access through Ecto contexts.

Yes, you can use Ecto contexts for data persistence alongside Phoenix Channels. This Skill handles data persistence by structuring contexts to manage database interactions, allowing real-time channel events to trigger data validation, creation, and updates efficiently.

The best way to version JSON APIs in a Phoenix application is by structuring controllers and contexts into distinct versioned modules, routing requests to the appropriate logic. This approach isolates breaking changes and maintains backwards compatibility for API consumers.

Yes, Phoenix PubSub optimizes for fault tolerance and concurrency by leveraging the Elixir BEAM's lightweight processes to handle millions of simultaneous connections. It isolates failures and distributes message broadcasting across nodes without blocking operations.