role-fullstack:real-time-features

Implement real-time features using WebSockets (Socket.io, ws) or Server-Sent Events (SSE) to push live data, manage connection states, and enable presence indicators and scalable chat systems.

Scale WebSocket connections across multiple server instances by integrating Redis Pub/Sub to manage message broadcasting and synchronize connection subscriptions across your distributed architecture.

Collaborative editing with CRDTs works by carefully managing data deltas and synchronizing state changes across clients via WebSockets, ensuring concurrent edits merge without conflicts.

Use Server-Sent Events for unidirectional real-time updates like notifications or activity feeds, whereas WebSockets are better suited for bidirectional communication like chat and collaborative tools.

You do not need managed services to build live notifications and real-time dashboards; you can establish these features directly using WebSockets or SSE for pushing live data to clients.

Managing subscriptions and data deltas matters for real-time user experience because it ensures optimal performance by only transmitting changed data and maintaining accurate connection states.