convex-realtime

Real-time data subscriptions automatically push updates to clients whenever underlying data changes, eliminating polling. Convex reactive queries establish this connection—use useQuery to fetch data that automatically refreshes when the server state updates, ensuring your UI stays synchronized without continuous requests.

Yes. Real-time queries work for collaborative environments where multiple clients need instant synchronization. Live dashboards and collaborative apps benefit from automatic UI updates triggered by data changes across all connected clients, keeping everyone viewing the same current state.

Real-time subscriptions push updates immediately when data changes, reducing latency and server load. Polling requires clients to repeatedly request data at fixed intervals, wasting bandwidth and delaying visibility of changes. Subscriptions eliminate this overhead through reactive synchronization.

Presence indicators and activity feeds subscribe to specific data streams that update instantly when users connect, disconnect, or perform actions. The subscription mechanism ensures all clients see these events immediately without refresh delays, enabling live presence and real-time activity visibility.

Convex handles connection management internally—reactive queries automatically reconnect and resynchronize on disconnection, so you don't manually manage state. Your UI receives updates seamlessly as long as the client library maintains the subscription.