Why WebSockets Are Overkill for Most Real-Time Apps

The text critiques the common tendency to default to WebSockets for real-time features, suggesting a more nuanced approach. It argues that for many applications, especially those requiring one-way updates, Server-Sent Events (SSE) offer a superior solution. SSE is highlighted as simpler, easier to debug, and more scalable because it leverages standard HTTP infrastructure. The article provides examples of scenarios ideal for SSE, such as dashboards, notifications, and activity feeds, where the server primarily sends data. Conversely, it identifies situations where WebSockets are essential, including multiplayer games and collaborative editors, which demand continuous two-way communication. The text emphasizes that SSE is often more reliable due to its compatibility with existing HTTP infrastructure, including proxies and CDNs. It also tackles common misconceptions about SSE, explaining how issues like buffering and scaling can be effectively addressed. The core message promotes a shift in thinking, encouraging developers to prioritize SSE when the server primarily communicates, ultimately leading to more robust and maintainable real-time applications. The article ends on the note that SSE is often the more pragmatic choice.