FrontendHaltNetworking·Intermediate·Conceptual·1 min read
What is the difference between WebSockets and Server-Sent Events?
Short interview answer
WebSockets provide a full-duplex channel where both sides can send messages at any time. SSE is a simpler one-way channel where only the server pushes events to the client over a long-lived HTTP connection.
Key takeaway
Explain the underlying mental model clearly, then support it with a concrete example and its trade-offs.