Server-Sent Events (SSE) is an HTTP mechanism that lets a server stream a continuous sequence of events to the browser.
What is Server-Sent Events (SSE)?
Server-Sent Events (SSE) is an HTTP mechanism that lets a server stream a continuous sequence of events to the browser. It is part of the practical vocabulary used by administrators, developers and IT teams. Understanding it helps identify where the technology sits in an architecture and what problem it is intended to solve.
What is it used for?
It is mainly used to one-way real-time notifications and updates without WebSocket. In production, its usefulness depends on the surrounding configuration, compatibility requirements and operational constraints.
How to recognize it in practice
You may encounter Server-Sent Events (SSE) in product interfaces, configuration files, logs, API documentation, network diagrams or troubleshooting procedures. Always check the context before changing a setting based only on its name.
Points to watch
SSE is one-way and depends on intermediary proxy timeouts and buffering. Test changes, document the previous state and keep a rollback path for production systems.
In short
Server-Sent Events (SSE) = an HTTP mechanism that lets a server stream a continuous sequence of events to the browser. Its main value is to one-way real-time notifications and updates without WebSocket.