HTTP Long Polling vs WebSocket

Developers should learn HTTP Long Polling when building real-time features like chat applications, live notifications, or stock tickers in environments where WebSockets are not supported or feasible, such as older browsers or restrictive network configurations meets developers should use websocket when building applications that require real-time features, such as live chat, collaborative editing, online gaming, financial tickers, or live sports updates, as it reduces latency and server load compared to polling techniques like http long-polling. Here's our take.

HTTP Long Polling

Nice Pick

Developers should learn HTTP Long Polling when building real-time features like chat applications, live notifications, or stock tickers in environments where WebSockets are not supported or feasible, such as older browsers or restrictive network configurations

Pros

• It provides a fallback mechanism for real-time communication, ensuring compatibility and reliability in diverse deployment scenarios, though it may introduce latency and server overhead compared to more modern alternatives
• Related to: websockets, server-sent-events

Cons

• Specific tradeoffs depend on your use case

WebSocket

Developers should use WebSocket when building applications that require real-time features, such as live chat, collaborative editing, online gaming, financial tickers, or live sports updates, as it reduces latency and server load compared to polling techniques like HTTP long-polling

Pros

• It is particularly valuable in scenarios where instant data synchronization is critical, such as in dashboards, notifications, or IoT device monitoring, enabling efficient and scalable bidirectional communication without constant connection re-establishment
• Related to: real-time-communication, http

Cons

• Specific tradeoffs depend on your use case

The Verdict

These tools serve different purposes. HTTP Long Polling is a concept while WebSocket is a protocol. We picked HTTP Long Polling based on overall popularity, but your choice depends on what you're building.

The Bottom Line

HTTP Long Polling wins

Based on overall popularity. HTTP Long Polling is more widely used, but WebSocket excels in its own space.