Discuss the use of WebSockets in a Next.js application.
Instruction: Explain how to integrate and use WebSockets in a Next.js application for real-time data communication.
Context: This question assesses the candidate's ability to implement real-time communication features using WebSockets within the context of a Next.js application.
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Understanding the Core Concept: At its essence, WebSockets provide a bidirectional communication channel over a single, long-held connection. This is a step away from the traditional request-response model and is invaluable for real-time applications...