/ˌɛsˌɛˈɛ/
noun — "keeping the server chatty with your browser without spamming the world."
SSE, Server-Sent Events, is a web technology that allows servers to push real-time updates to browsers over a single HTTP connection. Unlike WebSockets, SSE is unidirectional—the server sends events to the client, which listens and reacts without needing to constantly poll for updates.
Technically, SSE uses a text-based stream with a specific MIME type (text/event-stream) to transmit messages. Browsers receive these events via JavaScript’s EventSource interface, which automatically handles reconnections and event IDs to ensure reliable delivery.
Examples of SSE usage include live dashboards for Network Monitoring, real-time notifications in IT Operations systems, and updating metrics in Dashboards without page reloads.
Conceptually, SSE is a one-way whisper from server to client—it keeps the user interface up-to-date without the overhead of repeated requests, making real-time data feel effortless.
In practice, SSE complements Analytics, Performance monitoring, and Event Management by streaming continuous updates efficiently.
See Network Monitoring, IT Operations, Dashboard, Analytics, Event Management.