Real-TimeAppArchitecture:Websockets,Polling,orManagedServices?

Polling — periodically checking a server for updates rather than maintaining a persistent connection — is simpler to build and operate than websockets, and for many use cases (a dashboard that updates every few seconds is perfectly fine), it's genuinely sufficient. It's easy to dismiss as unsophisticated, but for a feature where sub-second latency isn't actually required, polling avoids meaningful architectural complexity for no real user-facing benefit.

The trade-off is slightly higher server load at scale and inherently non-instant updates — acceptable for many features, not for others.

Websockets maintain a persistent, two-way connection, enabling genuinely instant updates — appropriate for live chat, collaborative editing, or any feature where users would actually notice and be bothered by a multi-second delay. This is real, proven technology, but it adds operational complexity: connection management, reconnection handling, and typically more careful infrastructure planning than a standard request-response API.

This is worth the added complexity specifically when instant delivery is a core part of the user experience, not a nice-to-have.

For video and audio calling specifically, a managed real-time communication service (like Agora, used for the video-calling functionality in a real production fitness platform) handles the genuinely hard parts of real-time media — network adaptation, quality management across varying connections — far better than building this from scratch would, for the vast majority of products that need video/audio features.

The general pattern: build custom real-time infrastructure (websockets) for your core, differentiated real-time feature; use managed services for well-solved, specialized real-time problems like video/audio.