Vaadin Flow Push Transport: WebSocket vs Long-Polling for Latency‑Constrained Deployments
Goal Determine whether to rely on Vaadin Flow’s server‑side WebSocket push with automatic fallback to long‑polling, or to configure long‑polling as the primary transport when network latency is unpredictable and servlet container WebSocket support is limited. Constraints and Uncertainty Vaadin Flow 14+ uses WebSocket push by default when @Push is present, fa