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

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Optimistically edit a message and notify all users in real time

Optimistically edit a message and notify all users in real time

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

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Optimistically edit a message and notify all users in real time

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Hello and welcome. In this session, I'll guide you through implementing a powerful and user-friendly feature in your Next.js app, editing a message with optimistic UI updates, and broadcasting those changes to all connected users in real time. We'll build a back-end API endpoint in Next.js to securely handle the edit. And on the front-end, We'll make the UI feel instantaneous by updating it before the server confirms the change. We'll then use server-sent events to ensure that when one user edits a message, everyone else sees that update immediately. This combination creates a seamless and modern user experience. Ok, let's start building our edit functionality. Now I am creating the skeleton for our new API endpoint. I'm defining an exported asynchronous function named put that accepts a request object. In the Next.js app router, when you export an asynchronous function named after an HTTP verb like put from a route.js file, Next.js automatically creates an API endpoint that responds…

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