🎁 New User? Get 20% off your first purchase with code NEWUSER20 · ⚡ Instant download · 🔒 Secure checkout Register Now →
Menu

Categories

Web Development Intermediate

What is Server-Sent Events?

A server push technology that enables a server to send real-time updates to a browser over a single HTTP connection.

SSE provides a simple, unidirectional channel from server to client. The server sends events as text/event-stream content type. The browser uses EventSource API: const source = new EventSource('/events'); source.onmessage = e => console.log(e.data).

SSE is simpler than WebSockets for one-way communication (notifications, live feeds, stock tickers). It supports automatic reconnection, event IDs for resume, and named events. SSE uses standard HTTP, working through firewalls and proxies without special configuration.

Related Terms

TypeScript
A typed superset of JavaScript that adds static type checking, interfaces, and advanced IDE support to JavaScript development.
CSS Flexbox
A CSS layout model that provides efficient arrangement of items within a container, handling alignment, distribution, and spacing.
SEO (Search Engine Optimization)
The practice of optimizing websites to rank higher in search engine results, increasing organic traffic.
Server-Sent Events (SSE)
A web technology enabling servers to push real-time updates to browsers over a single HTTP connection, simpler than WebSockets.
HTTP/3
The latest HTTP version that uses QUIC instead of TCP, providing faster connections and better performance on unreliable networks.
Web Components
A set of browser-native APIs for creating reusable, encapsulated custom HTML elements with their own styling and behavior.
 View All Web Development Terms →