sse-basics

What problem does it solve?

SSE Basics provides a simple, reliable pattern for server-to-client real-time updates using Server-Sent Events. It lets you push events from server to web clients in Next.js with clean formatting and predictable connection handling.

Core Features & Use Cases

• Unidirectional server-to-client streaming (server → client)
• Text/event-stream formatting with data: payload and double newline
• Basic server-side route handler using TransformStream/ReadableStream
• Client consumption via EventSource with automatic reconnect
• Use cases: live notifications, feeds, progress updates

Quick Start

To begin, implement a minimal SSE endpoint and a client EventSource to subscribe to /api/sse-basics that prints incoming JSON payloads.