From the course: Master React 19 and Next.js 16 with Hands-On Projects and Real-World Applications

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Server-sent events in Next.js (SSE)

Server-sent events in Next.js (SSE)

From the course: Master React 19 and Next.js 16 with Hands-On Projects and Real-World Applications

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Server-sent events in Next.js (SSE)

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third-party libraries like Socket.io everyone who is currently listening. It's important to note that this in-memory array works great for a single server instance, but for a scaled, serverless environment, you'd typically use a more advanced solution like Redis PubSub. Now it is time to define the main function for this route. I am creating an async function named get. In Next.js App Router, the file route.js uses functions named after HTTP methods like get, post, delete, etc. to handle requests. Since clients will establish a connection to our stream using a GET request to API slash messages slash stream, this is the function that will execute. The async keyword isn't strictly necessary for this specific implementation yet, but it's good practice for API route handlers which often perform asynchronous operations. Inside our get handler, I'm creating a readable stream. This is a powerful, built-in web API that lets us create a stream of data that can be sent to the client piece by…

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