What Server-Sent Events is - and how and when to implement it | Ably Realtime

This article explores what server-sent events (SSE) is, how it works, when to use it, and key considerations and challenges to be aware of.

On this page Topics / Protocols / Server-Sent Events: A WebSockets alternative ready for another look 13 min read • Last updated Updated Jun 28, 2023 Server-Sent Events: A WebSockets alternative ready for another look Instead of the browser continuously u]:no-underline" href="https://ably.com/topic/long-polling"> polling the server on the off chance there’s new information, Server-Sent Events (SSEs) enable the server to push data to the browser as soon as there’s new information available. For example, breaking news updates, the latest Bitcoin price, or your food delivery driver’s location on

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• Kevin Lee

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