Modern Server-Side Event Implementation(3804)

The author explored server-side push technology, focusing on Server-Sent Events (SSE) using a Rust-based web framework. Traditional Ajax polling is inefficient due to resource waste and poor real-time performance, leading to the exploration of SSE. SSE offers a simpler, server-driven approach for pushing data to clients using the `text/event-stream` content type. Advanced SSE implementation includes event types, IDs, and reconnection intervals for robust real-time applications. Performance testing showed the framework could handle high QPS with low latency, suitable for large-scale real-time services. The author provided code examples for both basic and advanced SSE server and client implementations. SSE finds applications in real-time monitoring, data feeds, and scenarios requiring unidirectional data flow. Compared to WebSockets, SSE is simpler to implement and firewall-friendly, making it ideal when bidirectional communication is not essential. Real-world applications include live dashboards and monitoring systems, suggesting its suitability for many server-push scenarios.