What is SSE (Server-Sent Events)?
A standard for pushing updates from a server to a browser over a single HTTP connection.
Why It Matters
SSE is simpler than WebSockets for scenarios where data only flows from server to client.
Real-World Example
A live stock ticker that receives price updates from the server without the browser making repeated requests.
“Understanding terms like SSE (Server-Sent Events) matters because it helps you have better conversations with developers and make smarter decisions about your software. You do not need to be technical. You just need to know enough to ask the right questions.”
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Related Terms
Real-Time
Features that update instantly without needing to refresh the page
WebSocket
A persistent connection between browser and server that allows instant two-way communication
Polling
Repeatedly checking for new data at regular intervals
API
A way for different software applications to talk to each other and share data
REST API
A standard way to design APIs that uses simple web addresses and common actions like GET (read) and POST (create)
GraphQL
An alternative to REST APIs that lets you request exactly the data you need in a single call