Daily Term: Long Polling

Long Polling

Long Polling is a technique where a client sends an HTTP request to a server, and the server holds the request open until new data is available or a timeout occurs. Once the server responds, the client immediately sends another request. This simulates real-time updates in applications like notifications, but it’s less efficient than WebSocket or SSE due to repeated HTTP overhead and can strain server resources under high load.

Date: 2025-06-09